Stripe or Square can be rightfully called the leaders of the market, thanks to broad diversification of their offerings, customer bases, and revenue sources. They offer a multitude of solutions to various groups of merchants, including famous highly-profiled startups, such as Facebook and Lyft. Indeed, for startup merchants, partnership with Stripe or Square seems like the best gateway solution they can hope for. However, as they grow, new needs emerge, and their partners are not always able to meet them, so sometimes, they start looking for alternative payment solutions. High gateway fees and lack of some necessary technical features are among the major motives of merchants that look for alternative service providers. Some merchants and payment facilitators even think of having their own payment gateway solutions, but such a step makes sense only under really large processing volumes, so white-label payment gateway options are often the best choice.
Learn more about when it is reasonable to look for alternatives to Stripe or Square and what options are available in our respective article on Paylosophy.