In tech, it's winner-take-all.
It's not like Coca-Cola (KO)
When a technology market consolidates, there is one winner and everyone else needs to find something else to do.
In the case of e-book readers, that winner is Amazon (AMZN)
This story has been true since the tech sector began.
This is not the same thing as grabbing all the sales. IBM stared down two generations of mainframe competitors: the original BUNCH (Burroughs, Univac, NCR (NCR)
Notice that Burroughs and Univac became Unisys (UIS)
In search, for instance, Yahoo! (YHOO)