Who buys PSPs?

Who exactly are the buyers of payment service providers (PSPs)? Are they mainly large enterprises seeking secure and efficient payment solutions for their global operations? Or are they also small and medium-sized businesses looking to expand their reach and accept payments from customers worldwide? Do individuals or sole traders also turn to PSPs for their payment needs? And what drives their decision to use a particular PSP over another? Understanding the demographics and motivations of PSP buyers can provide valuable insights into the industry and its future growth prospects.