Experience. It's the same reason I'll try out a new language on a throwaway prototype: real experience helps you think more clearly about the future.

Except your competition may get a lock on the supply contract because they were early-adopters. Or they figure out how Tesla is doing it, and risk competing with Tesla, outcompeting you.

Companies that don't innovate better be ready to be disrupted.

PR, or lack thereof, when these ship.