Andrey Rublev thinks banning Russian and Belarussian players from again from Wimbledon will be the absolute worst that can happen for tennis.
There is always a chance that it might happen again but it's highly unlikely. Wimbledon was finned for banning players this year despite claiming they simply followed the instruction of the UK government. Another ban would certainly be followed by even more fines so it's hard to imagine them doing it again.
Rublev was the biggest campaigner to overturn the initial ban and he would not want to see it again:
"We had a meeting with the Grand Slams and the ATP. It’s really good that ATP is more open to help everyone. We were very honest, giving a lot of options, and many ways to help. If they ban us for the second year, we will see no changes, and it will be worst for tennis. Only we make more fire in the tennis. And it doesn’t help the situation. We are offering help in any direction that is possible. We want to show that tennis can be bigger than politics."
Tim will tell whether we'll see another ban but it seems very unlikely.