In my opinion, using Paypal is more complicated than using Bitcoin. Money from Paypal will usually go to the bank within 2-4 business days (excluding holidays, Saturdays, and Sundays), which may be longer. So I see Bitcoin as the fastest and most reliable payment gateway.
Bitcoin running on blockchain is very fast, safe and there is no third party who will receive payment for being in between the sender and receiver unlike the other digital payment option where there is a third party who receive fees for providing services to both sender and receiver. If bitcoin as expected take over the payment transaction will really affect the fortune of other payment options like paypal and others. They may update to a blockchain to remain relevant.
I'm pretty sure you guys come from country where credit/debit/payment cards are widespread, accessible and in use since many, many years ago.
Well, I'm from country where in the 90s and 00s it was difficult to get a credit card, it was stuff reserved only for the wealthiest and (big) majority of shops didn't accept them.
When internet gained popularity most of the transactions were done by cash on delivery or bank transfers. And
number 1 rule for e-shopping was to choose cash on delivery because it was safer than bank transfer: you wouldn't have to pay until the goods arrived. Of course it didn't prevent scams where you opened the package to find a brick or bunch of potatoes
instead of goods you ordered, but it was way safer than bank transfer - and
I find bank transfer closest to bitcoin transaction.
Today when I opened youtube app I got a video of another scam in my feed and guess what: it involved bank transfer, this time electronic one as electronic bank transfers are most popular way of paying online today in my country. Electronic bank transfer is instantaneous and as direct as it can be: from bank to bank. It also means
if you get scammed there is no one who can help you (except police, but they don't care).
So yeah, Paypal delays may be irritating, some of their practices are almost fraud (I wouldn't ever use Paypal for really big transaction), card fees may be big issue (in my country they are very high) but having 3rd party involved is also good thing when something goes wrong.
I still remember an anecdote from 2013 or 2014 where someone was trying to pay via Bitcoin online to some big online retailer/ service provider and there were some problems with the payment and when he contacted support they told him "we can't help you,
you have to call Bitcoin and ask them for help"