I also wonder what the real reason was for trying to force many of us - who use other online venues, as well as our own sites, into a seperate payment system we did not want - nor need?
EBay didn't.
They were very happy with PP as a part of their company.
EBay had their own in-house payment processor, Billpoint, at the turn of the millennium.
They bought Paypal from Elon Musk and PP became their in-house processor.
PP was allowed to grow, but still belonged to eBay, and to accept work from other venues and even private individuals.
It became as big if not bigger than eBay's core business.
For you newbies, that included Skype at one time. A few other profitable ventures, a few less profitable.
The about six years ago, Carl Icahn, a Wall Street wolf, forced eBay into spinning off Paypal as a separate business, making himself another fortune before wandering off to murder ToysRUs.
EBay remained a customer of PP, but no longer owned it, nor did they get an income from the company.
So.
They made the decision to go a different way when the five-year contract with PP ended, and went with Ayden, a Netherlands company, quite new, but with international expertise to help with expanding* European and Asian markets.
TL/DR: EBay was forced to sell PP, and found a cheaper replacement program.
*The USA is a flat, mature market. It's the largest single economy in the world, but is not growing as fast as many. This was also why eBay introduced the Seller Protection of the Global Shipping Program to encourage US sellers to ship internationally, where the market is expanding.
