Day by day, but still we need to be patient! Big things don't come overnight, so I guess we need a lot more time for full adoption, that will happen eventually, in my humble opinion. I also think that any reasonable prediction for this to happen must be +10 years from now! It's not like it's impossible to happen earlier, at least we in crypto are used to surprises! Bitcoin had many obstacles, and I think we will see bigger ones in the future, maybe organized by more countries and banking institutions! When we survive that Bitcoin will have an easy journey to the top!
In crypto there are times when big things happen overnight. I remember making 10% during my sleep way too many times, literally went to sleep and woke up 10% richer, which is how you become wealthy if you have money, I do not have too much money so my 10% was like 500 bucks but it is still an awesome feeling. I think that banks and governments will not be against crypto all that much, they will see this as arms race and they will want to get their people involved in crypto as much as possible and tax people with crypto and hold as much crypto as possible.
Let's think of USA vs China, right now China is acting like they hate Bitcoin and ban so many things, but if asked to China if they would prefer USA government have 5+ million bitcoins, would they prefer that? I am sure that they would prefer to have that much bitcoin themselves instead of USA. So I believe there will be legit help from governments to push us into crypto more.