potential customers for the development of the
payment system.
2 PREDICTOR ANALYSIS
Research on determining the impact of marketing
incentives on the pace of development of payment
systems mainly focuses on determining the factors
that encourage people to become users of the payment
system. Often the emphasis is on social aspects, as
well as comfort. For example, the study "Factors
Affecting the Acceptance of Mobile Payment
Systems in Jordan: The Moderating Role of Trust"
(Manaf Al-Okaily, Mohd Shaari Abd Rahman and
Azwadi Ali 2019), which begins a cycle of research
on the behavior of the JoMoPay payment system,
focuses on the study of the social effect, the price
effect and the conviction of potential customers in the
availability of ready-made infrastructure. In the third
article of the research cycle "An Empirical
Investigation on Acceptance of Mobile Payment
System Services in Jordan: Extending UTAUT2
Model with Security and Privacy" (Manaf Al-Okaily,
Mohd Shaari Abd Rahman, Emad Abu-Shanab and
Ra'Ed Masa'deh, 2020), the researchers conclude that
the expected application performance, social impact,
price, security and privacy have a significant effect on
the behavior of potential customers. However,
simplicity, the comfort of usage and customer
satisfaction are not important factors for starting
using the payment system.
Interesting study in the context of determining the
effect of marketing incentives is made in the paper
"Digital wallet war in Asia: Finding the drivers of
digital wallet adoption" by Putri Natasya Fanuel and
Ahmad Nurul Fajar (Putri Natasya Fanuel and Ahmad
Nurul Fajar 2021). Based on a survey of 457 users of
digital wallets using the extended technology
acceptance model (TAM2) and innovation diffusion
theory (IDT), the researchers found that the main
factors for choosing payment systems by customers
are usefulness, simplicity and innovation. At the same
time, the hypothesis about the influence of
advertising on customer behavior was rejected as
insignificant. This conclusion was made by using a
combination of coefficient of determinant, predictive
relevance, effect size of coefficient determinant and
effect size of predictive relevance. However, the
authors believe that different types of promotions will
be effective for different user demographics. In the
question of an effect from the experience of using the
payment system by other users (social effect), a small
relationship has been established. Nevertheless, the
authors of (Putri Natasya Fanuel and Ahmad Nurul
Fajar 2021) are sure that the influence of experience
takes place and the main reason for the low
correlation is the relative novelty of payment systems
in the Indonesian market.
For the purpose of this paper, a key issue is an
applicability of (Putri Natasya Fanuel and Ahmad
Nurul Fajar 2021) findings in other markets. The
specifics of Indonesia can be crucial in determining
the effect of marketing incentives for other countries.
It is necessary to find a way that could form an
understanding of the role of marketing for Indonesia
and the other regions.
3 APPLICATION OF THE BASS
EQUATION
We are sure that the hypotheses of the researchers can
also be verified by using mathematical methods for
predicting the development of payment systems.
In our previous studies (Victor Dostov, Pavel
Shoust, 2019, 2020a, 2020b), we aimed at providing
an analysis the possibility of predicting the behavior
of the payment system over time. We proceeded from
the assumption that payment systems developing is
customer-driven and it is defined by generalized
customer behavior. To confirm this hypothesis,
modified equations of Bass innovation diffusion and
Verhulst were used. The advantage of this approach
is that the indicators used in the model have a
pronounced economic aspect. The following
parameters used in the proposed trend building model
are (Victor Dostov, Pavel Shoust and Elizaveta
Popova, 2019):
current number of users x;
the maximum number of users, for example, the
entire audience of a given country, N. Therefore,
the number of potential users not currently
participating in the system is N-x;
audience capture rate, which reflects the
probability that a given user will start using the
service: a>0 (the reverse time of the decision)
within a given period;
audience fatigue rate which reflects the
probability that a given user will stop using the
service: b>0 (the reverse time of the decision)
within a given period.;
As it was shown in (Victor Dostov and Pavel
Shoust, 2020), the configuration of the modified Bass
equation largely depends on the type of relations that
arise between customers and companies within the