There is no way .io would share that same fate
Notably, .su domain for Soviet Union is alive and well, comrades.
As is .hk which is perhaps a better example
My .com domain hoarding/scalping is paying off by the sheer virtue of other TLDs becoming unreliable over time.
TANSTAAFL.
Should have hoarded .gov .mil and .edu
The ROI for selling those would be insane.