If FooCorp started trying to convince people to do all their buying and selling using FooCorp shares - of which the FooCorp owners naturally have a great many - then yes, obviously, it would be a scam intended primarily to enrich the FooCorp owners.
As a stock, FooCorp might be a perfectly fine investment.
Remind me again what the fundamentals for bitcoins are? What are their same store sales for last quarter?