I've ran many businesses and chargebacks are just a cost of doing business. Majority of business is done with credit cards, its just how the real world operates. Your generally fine selling btc for paypal if you charge a premium to offset any losses you might have.
Ok, lets say you want to sell 1 BTC using paypal. How much of a premium would you want for that?
Depends on the platform, if it is something like paxful where you can sort of get a good idea on who is trustworthy maybe 15% or so. Assume 1 out of 10 trades will go bad.
The thing is with paypal you get a huge amount of customers that otherwise wouldn't be able to buy crypto.