A certain stabilization in demand before growth resumes is normal. That could be possibly be one reason. But it is never black and white, there are several other possible reasons. Second is that the Federal Incentives have gone for GM and Tesla. It has not gone for others, but there is a perception that they (other cars) are overpriced, even with the incentive when there features are compared with the Tesla. I know that the e-tron is close to
@David Green but many people look at the range (204 miles vs 370 miles for the S) and decide that it may not be for them. Range may be more important in US than Europe. (I would prefer not get into a discussion if the e-tron is better, I have more than one person tell me they rejected as they did not see paying that much money for a lower range than the S.) Hence the current competition does not really make a big impact on the market. that there is a segment of potential buyers who may not want the current Teslas' but do not see an good alternative. I believe the current competition is lackluster, you are welcome to disagree. People may be waiting for a better opportunity to get the federal discount, which leads us to the third reason.
Third, there are people including me , who are in a wait and see mode, hoping that competition comes up with other alternatives. One is Rivian, there is a lot of anticipation there. Ford may come up with a Pickup, so will Tesla. Then we have Model Y and possibly the Crozz. We have the new GM which has still to be announced. Some like
@davidtm are waiting for cars already available but only in California like the Hyundai/Kia. Again most of these new crop of cars are a year away at the best, but I think the fresh crop of cars will inspire more confidence then the current of crop of "Tesla Killers".
Fourth, there is clearly a focus from the current administration in the US to de-emphasize BEVs in favor of ICEs. This reduces the pressure on other manufacturers to expand the BEV market. Now the attitude is that "we will make EVs if we see a demand" rather than "we need a way to meet the mandates and hence need to create demand". (California is an exception) Again, no political discussion on if it is good or bad, just the facts Ma'am/Sir.
So while I do not know that there is only one reason why sales have flattened, I so believe it will grow but there will be fits and starts. I understand you may discount all my reasons and so be it.