In fact, even though Bitcoin is popular and in demand by many people, Bitcoin is not fully owned by everyone.
In most of the countries in the world Bitcoin has not fully become legal tender.
that's the problem. why until now several major platforms have not been able to implement payments with Bitcoin. especially for some companies that are located in countries that have strict regulations regarding the ownership and use of Bitcoin.
some Countries allow the ownership and trading of Bitcoins. but does not allow the use of Bitcoin as a means of payment. although quite a good idea from the OP, but there are always pros and cons that exist.
maybe this could also be the reason, why the Facebook social media platform was once very great in the media regarding the launch of their new coin.
There are still many countries that have not accepted the presence of Bitcoin, which is why there are many obstacles experienced by large companies, for example Facebook, who want to issue their coin called Meta, until now, they haven't launched it even though they have been busy discussing it in several forums, including this forum, until now no big company has dared to launch their digital coin in the community.