Hm. So in essence, you would instantly buy crypto through Stripe, and then they would instantly sell it to someone else? Kind of like a middleman or exchange service?
It's so strange to me that people don't see how that is antithetical to the concept of cryptocurrencies.
The right way to do cryptocurrencies is to just let people use cryptocurrencies. But that means watching your business get eaten up by it. Which is why they are trying to insert themselves so that they don't get disrupted out of existence.
Smart business like to consolidate their dependencies. If the fee is on the order of 1-2% then the reduced overhead of "where's my money" may be worth it to many small businesses.
There's a lot of supporting structure to nail a point of sale transaction for both sides. It isn't reasonable to expect every business to run bitcoind, handle cold wallet vs hot wallet, and integrate it with their ecommerce system.
Companies want a simple solution that lets them accept the various common ways people want to pay whether that's Paypal balance, any of the credit/debit cards, or any of the other services out there.
Same goes for buying in EUR and the merchant receiving USD. Buyers get to use their preferred currency (now inc. crypto) and merchants receive theirs.