$5k that soon might not be even be desirable. It would indicate tremendous overheating of the whole ecosystem.
For once, if you would want to sell out some, you won't be able to do it fast.
Coinbase, for example, has
50K max (it would be just 10 coins).
If you start doing multiple 50K all of a sudden, I am pretty sure that your account could be frozen before they figure out what is going on.
Too massive (in $$) withdrawals might be problematic.
There is not much to buy with bitcoin directly (without conversion) for that kind of $$ equivalent (maybe Tesla?).
Network would be completely stuffed as well, fees might go up to $1-10 (good for miners) as people would withdraw probably $ billions equivalent.
At 5k total current market cap would be $80 bil, so if even 10% of holders would want to sell, they would need significant buying pressure to be able to do it.
It would still be cool, though
you're talking as if 10 coins is a small amount, it's not.
there's about 100,000 people in the world who even have 10 bitcoin, and after the next halving (in about 5 weeks) only 12.5 new coins will be generated every 10 minutes, IN THE ENTIRE WORLD.
So basically if you divide the newly generated coins that's 0.0002815 satoshi per second per person. That is 739.8 satoshi per month per person.
10 bitcoin is a very large amount.
once people start to realize how big 1 bitcoin is, then they will truly understand how undervalued bitcoin is right now.
Btw fees are based on the amount of bytes you need, not the amount of bitcoin you send.