Yes: In the beginning of a pyramid there are still plenty of new fools you can convince to buy from you your hot potato (i.e. your bitcoin).

Eventually however the pyramid cant be sustained anymore, as no new fools can be found to bail out the old ones.

This is what happened to bitcoin: It skyrocketet (with temporary corrections) and now has collapsed, burning a unprecedented number of people. Due to the extensive coverage of the rise and crash of bitcoin, and the significant number of people who now sit on losses, it is very unlikely that the pyramid can be inflated again.