One reason is that other manufacturers are extremely conservative when it comes to the marketing of these capabilities, in comparison to Tesla who is overpromis

One reason is that other manufacturers are extremely conservative when it comes to the marketing of these capabilities, in comparison to Tesla who is overpromising a lot. Another reason is that Teslas are "cool", and get a lot of press in non-automotive circles, which means that a lot of people think they were first with a lot of technology, which simply isn't true. And a possible third reason is that quite a lot of tech people have been researching and toying with the idea of getting a Tesla, but those same people have never researched similar vehicles from other manufacturers, so they have no idea how they compare. I had a 2014 Mercedes E-class, its self-driving capabilities was on-par with a 2014 Tesla. However, Tesla offers over-the-air updates of their vehicles, so existing Teslas got better, while my vehicle stayed the same, so that's a point they should have credit for and something they actually do better than most other manufacturers.