Anecdotally, I find early mover advantage to be overrated (ask anyone who bought Betamax or HD-DVD players). It is significantly cheaper – on average – to exploit what you already know and learn from the mistakes of other, earlier movers.
Most of the adults alive today have lived sometime when CPU speeds doubled every 12–24 months (see Moores law). This has conditioned many to believe that all information technologies improve exponentially, while, in reality, most are not.