"I'd heard that memristor from HP/Hynix was a done deal, simply waiting for market conditions to be right. Never sell your best if you can sell your old product line for a while longer...."
That's a fair strategy for evolutionary tech where the competition can choose to leapfrog you and go two steps ahead instead. Not so for revolutionary tech that can result in a paradigm shift, meaning your existing tech can be obsoleted cutting off your revenues. In the latter case, who dares wins since they gain the critical advantage of the first mover. If the market develops to be such that it can't support a lot of suppliers, you definitely don't want to be left behind.