And the #1 of a bubble is that the institutions of society will not allow it to crash in a way that harms those investors - just the rest of us. When the bubble pops, I doubt prices will go down or the excess supply will be for sale.
If they allow it to crash at all. They might artificially prop it up with government intervention, like they did in 2008-2010.
I bought my first Ticketmaster tickets ever recently and was shocked at the price. First and probably last time ever doing this.