Well.. yes and no. A lot of people unfortunately never really understood the real concept of a cryptocurrency as a payment mechanism and instead believe they are for getting rich quick.

That's the business Coinbase is in.

Now, if you are using cryptocurrency for payments you don't need Coinbase.

PayPal, since you mention it, knows that cryptocurrency is going to make it's business model obsolete as soon as it is widely deployed. That is why they pretend to allow you to keep and use Bitcoin on their platform.