I think the shops will accept cryptocurrency earlier then in 2025. Its already almost everywhere, so we need to wait little bit more. Hope shops will accept crypto and it will be everywhere in 2020. Because world develops very fast.
Regards.
probably the 2020 for main use everywhere is a little bit too soon, especially to those who have not yet access to the internet or online payments. but i think that most of online shops at least will start to accept cryptocurrencies payments