I do hope that people will realize the full the potential of Bitcoin. It has surpassed the combined market cap of these known banks globally and if they value their money, it's not too late to invest in Bitcoin. Everyone is also free to check out that link above about to see what are the other notable and top coporations that has surpassed by Bitcoin in terms of its market capitalization.
It is possible that in the next 4 years Bitcoin will occupy the top 5 positions, with its worldwide popularity and can be adopted by anyone, the potential to encourage a larger market cap can no longer be stopped. After this year's halving, many institutions have opened up to Bitcoin and are no longer afraid of its volatility. Because with the remaining supply of bitcoin dwindling, people and institutions are increasingly fighting over the remaining bitcoin. Since this is a value issue, I think banks are eager to recognize that Bitcoin's market cap will shift them as adoption increases across a wide range of financial institutions.