Accepting payments using bitcoin will depend on the policies of each country. And if one country prohibits the use of bitcoin or crypto, the people will not be able to use crypto for anything. Maybe in India, they can still use crypto or bitcoin as payment, but that will depend on the regulations in their country. Maybe in India, the presence of crypto is still on the gray side so the regulations are not so strict that they can still use bitcoin, let alone accept payments. But I don't know, but hopefully more offline stores will realize this and start applying crypto as a payment option. And maybe payments must limit how much money they can use to pay in crypto or bitcoin.
It's highly unlikely that all countries will pass such a controversial ruling, that they outright ban Bitcoin for a long period of time. There's just no grounds to submit these sort of rulings. It's likely that more dictatorship, and centralised governments impose these rules, but the people of these governments are probably more likely to ignore these rulings since they're already bypassing several other restrictions put in place by the government.
The thing is, accepting Bitcoin currently only makes sense for big companies that can provide the support that a smaller operation can't. Since Bitcoin is complex, when we do get closer to mainstream adoption, we'll need to significantly simplify the process, otherwise adoption will likely be either very slow, or never happen at all. To be clear, when I say adoption, I mean mass adoption, where we're edging closer to it being one of the officially recognised currencies, and mass used per country, worldwide.
But we have to look at the current reality where many countries still have not decided whether to accept bitcoin or not as a payment option. Meanwhile, for countries that still allow the use of bitcoin, both as a choice of payment instrument and other things, it provides the possibility for bitcoin users to use bitcoin as they should. But it's different if it happens in a country that prohibits bitcoin.
Centralized governments cannot immediately accept bitcoin as a means of payment because they have their own policies and I think if they don't get direct benefits from bitcoin, it will still take a while to see bitcoin being used as a means of payment. Meanwhile, large companies that support bitcoin as an alternative payment or investment cannot be separated from government supervision because laws and policies in their country bind them. But bitcoin still has a great chance to be accepted as one of the currencies of choice by all countries because a single country does not control bitcoin. And to get there will require mainstream adoption that has been taking place starting a few years ago. This adoption will be even faster if the price of bitcoin can increase higher because it will be able to attract the attention of large companies and, of course, the governments of each country.