What kind of problems do you see happening if this starts running up to the thousands and everyone selling off at the same time? Can the exchanges handle this or will there be glitches and crashes?
There will be pauses in NYSE trading for 5 to 10 minutes ok AMC/GME if the price is jumping too fast.
The selling won't all happen at once because everyone is going to time the peak differently.
The risk averse will sell on the first big dip. Like if it went up to $10,000/share and dipped to $6,500...a lot of people would get nervous and sell then. Many more folks would realize the shorts haven't covered and would hold. Price then rockets to...say....$25,000/share. Some will sell thinking THAT'S the peak. It won't be a straight shot up and people will jump off at different times.
People with a lot of shares have the biggest advantage. They might sell 40% of their shares, become millionaires and then save the the remaining 60% to see just how high this goes.
People with less shares might hold longer since $500/share or $1,000/share won't change their lives.