Don't count on it. MotoGP bikes and AMA superbikes now have E-start.
How many years ago did everyone think that 450 4-strokes would never work at in door SX ? How many guys at ALL LEVELS of competition, have you seen on the side of the track, kicking and kicking, to re-start their bikes ? When the "Factory guys", like Bubba, are losing points and races because they can't re-start the bike, they will fabricate lightweight starters and batteries to cure the problem. I'm really surprised none of the manufacturers have done it already. I say 2 years tops, it will happen.
What say you ?
PS : ALL my "race bikes" have electric start.