If this vaccine works well, I am sure everything will return to normal as before and Covid-19 influence on gambling will probably improve.
There will be a big chance to be back in normal life again if the vaccine has been found. Moreover, if the vaccine has spread all over the world. Then yes, we can gamble on sports gambling normally again.
Gambling is not really a problem, we can do it in online platform and I am not seeing any hindrance why we shouldn't.
The only problem is the sports are not fun as it was before, things change, no crowd (negative factor), so the atmosphere is different but as long as we can bet, for me, I would still fee the fun though. Anyway, I know everyone has different way of entertaining themselves, but for me, I am more on gambling that watching the game, so I'm okay with the betting status now, but of course I hope the world will be back to normal, not only in sports.