TBH, even if Toyota lost significant market share from 2023-25 because of the transition to BEVs, it's probably going to regain market share from 2027 and beyond when it comes out with more BEVs. I don't see any first-mover advantage for Tesla or other incumbents.
Sure, most Tesla or BEV owners will be holding on to their vehicles for six or more years or buying a BEV wouldn't have made sense financially. Heck, I'm holding out for better built BEVs with more than one central display to control everything and unless a car company meet my simple criteria (decent rear axle torque vectoring, longer battery warranty or better chemistry, no BS ultra- minimalistic interior, 120-mile winter driving range @80% SOC to allow for degradation), I'm not buying any BEV new, used maybe if I need to replace my ICEV or HEV.
With car prices soaring, it only makes more sense to buy reliable vehicles. Just look at all the Taycan issues, I'm sure that's widespread and that's already with VAG's Carid software group:
www.taycanforum.com