Plenty of companies move here because they like Thailand, availability of Giks, sex workers etc, if the nightlife goes down the toilet less incentive to be here, it's not efficiency or great English skills, of course it's a matter of opinion and people will deny that
Russia already has a vaccine, ok questionable, others may emerge then that's a game changer, authorities will allow multi entry they need tourism, if they haven't realised that yet they never will. Your estimate of years is way too pessimistic