Most painters are just chasing that Promar dream! Gotta do thousands of them to make a living. Brilliant.
I think in some ways, there's no magic paint, though. Though again, young in the field, I'm learning more and more that there's less perfect magic paints, and the final outcome depends more on prep and application materials and conditions. What will look better, a poorly prepped wall with Aura, or a fully skim coated then properly primed wall with... Cashmere Flat? (Aha, not Promar 200....) Of course the idea is that when using higher end paints you should also be doing high end prep as well. But I think far more often than especially a lot of BM sellers let on it's more just a matter of one product being branded for the wealthy and another product not. Of course there's real big standouts, to me the biggest standout was the now deceased Muralo company, but I just find more and more there's less "magic" paints, and each brand has pluses and minuses and just to use them where appropriate. If I have good conditions and the ceiling is flat and smooth, use BM 508 Ceiling Paint, it's brighter white. If it's a kinda junky looking ceiling, use SW Masterhide, it's flatter and grayer looking and hides more flaws. Neither choice is wrong, it's just different circumstances.
I think the flip side to the ProMar 200 dream is the BM Regal dream, according to BM store owners (I think you've said it) all the expensive paint buyers have fancy trucks and big houses, and cheap paint buyers are homeless or whatever. It's not true or black and white.
I think for getting said high end jobs is how you present yourself and your otherwise existing social circles, whilst paint choice is part of it, I think it's at best 20-30%. The rest is how you conduct yourself and present yourself, and a lot in that is preexisting social strata you're apart of and the economic situation otherwise in your community. Some as well is just even how old you look, if you have a family or are married as well, people will pay you more. Of course with more work and getting more skilled you can change those other variables, but I think it's fanciful to think buying Aura will make you a millionaire over night and make you go from apartment painter to 5 digit job millionaire houses overnight.