They mostly haven't, because it was simpler for them to have a few bigger batteries, maybe that was easier to get from suppliers too? Also tesla didn't have to

They mostly haven't, because it was simpler for them to have a few bigger batteries, maybe that was easier to get from suppliers too? Also tesla didn't have to fit their design into factories and cars made for a long central drive shaft down the middle. There are some evs with the skateboard, the porsche coming in a year will have that format, and use lots of little batteries like the t.