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!