Weed jokes aside, the market has finally caught up to the fact that Tesla is years ahead of their competitors. I bought my Model 3 18 months ago and it felt like buying a car from the future. I think my feeling was correct.
2019 saw a number of serious competitors (Audi, MB, VW, Porche) release their first EVs and they've all been somewhat disappointing. Very solid first releases taken in isolation, but the market expectations were that the "Big Boys" were coming in and were going to wipe the floor with Tesla. Turns out they couldn't, Tesla's head start is real and consequential.
If you go out and actually try to put down $40-50k on a car and judge all EVs on a collection of attributes (range, efficiency, safety, charging options, tech, etc) Tesla clearly stands out. It's tough to convince yourself to put down a nearly-equivalent amount of hard-earned money for another brand, so it is no coincidence that they outsell other EVs by a very wide margin.