PayPal is steadily decreasing in share of web payments, with the one redeeming part of their business being Venmo, which appears to be crushing Cash App.

Adyen competes primarily on price with no feature differentiation, and doesn't have the same ease-of-use.

Working at several large companies in payments areas who were Stripe customers, I'll sum up what the competition looks like by paraphrasing one of the executives I reported to: "we go to Adyen when we want to take a competing offer to Stripe for them to match".

This is purely speculation on my end but paypal has too much friction from a consumer standpoint for me.

I pay mostly with credit card (debit really but entering the number etc). When paying with PayPal, I need to click through several screens to even be able to enter my details. They almost always show a login screen, then I have to find the small text at the bottom that says I dont want one. Then by default they want my SEPA details, which Im not going to give them, before allowing me to select Credit Card. Even then I still have to double check that the "Create PayPal Account" checkbox is unchecked before paying.

Stripe immediately shows you a form and doesn't ask any questions.