I read about 1/3rd of your post before I got annoyed.
Every other game I have ever played as an "alpha or even beta" has been basically done, finished, ready to ship just needs some polish/balance.
Star Citizen is an alpha, in the traditional sense that it is incomplete and barely anything will function as intended or expected, as we know from this weekends citizencon, most if not all of their available resources have been piled into Squadron 42, which looks phenomenal, gameplay was smooth, animations were fluid, audio was crisp, everything you'd expect from a modern day studio entering alpha/beta. All of the gameplay systems shown during CitizenCon for SQ42 are on their way to SC in the next 12 months, if even half of it actually makes it in time, it will transform SC from the clunky mess it is today into a completely different game.
We will get a good idea of their direction for gameplay when Pyro becomes available at the end of this month.
Anyway, making a judgement about SC based on an incomplete alpha without considering the potential it has is just completely missing the point.
Oh and $600 million really isn't that much when you consider the scope they are aiming for, Star Field cost $400 million, Cyberpunk 2077 cost $300 million (excluding Phantom Liberty which fixed the game). So $600m for a Sahara desert sized play ground compared to a tiny sand box of the other 2 games, seems like money well spent, specially after seeing the Star Engine video, which by the way is one continuous shot over an 8 million kilometre spline without any loading screens. You can't even exit your ship in Star Field without a loading screen.
You'll have to excuse the fan boi nature, I know I come across as one, thats the ADHD in me, I'm either 100% or 0% into something, nothing in between. I loved Elite Dangerous as well, and I'd say the difference between the 2, Frontier Developments wanted to get something out ASAP and then build on it, CIG want to build it first then release it basically feature complete and without limitations they can do exactly what they want, the downside is feature creep is a major issue.