Ben Thompson, writing for Stratechery:
To that end, the significance of electric to Tesla that the radical rethinking of a car made possible by a new drivetrain gave Tesla the opportunity to make the best car: there was a clean slate. More than that, Tesla’s lack of car-making experience was actually an advantage: the company’s mission, internal incentives, and bottom line were all dependent on getting electric right.
Again the iPhone is a useful comparison: people contend that Microsoft lost mobile to Apple, but the reality is that smartphones required a radical rethinking of the general purpose computer: there was a clean slate. More than that, Microsoft was fundamentally handicapped by the fact Windows was so successful on PCs: the company could never align their mission, incentives, and bottom line like Apple could.