there wont be mass adoption at all.
bitcoin is a ponzi and nothing else.
no store of value no currency but simply a ponzi created by banksters to make the public fine with virtual money and how JPM described it in their report to make a quick 2000%.
At todays price levels of bitcoin the possible gain is nothing special.You can get way better gains on other assets.
How can you get the public fine with virtual money WITHOUT mass adoption?
If Bitcoin is a ponzi created by banksters to get people au fait with crypto, then it needs mass adoption.
So if true, it's a failure so far as it hasn't reached enough people. Hence why the number of Bitcoin wallets with a balance is extremely low.