To put things in perspective if we knew about a 1,000 ton 100% gold asteroid at say 1.2 AU, getting that to earth right now would cost more than it was worth. Add on top of that the need to refine stuff in space or send back less valuable material and it's a pipe dream until we get a lot better at spaceflight.
PS: You can increase the gravity of living spaces on mars 'easily' by rotating the habitat. Though we don't expect that to be necessary.
How is Planetary Resources a scam? Citation needed.
We can easily do 20g on earth: https://en.wikipedia.org/wiki/High-G_training
1g is much easier in mars gravity as you can simply tilt the chamber at an angle while spinning it. Training centrifuges generally have the chamber on a hinge so you automatically get the correct angle.
Now, sure you lose some energy to friction. But, not all that much further, we have a lot of experience dealing with very heavy rotating objects for decades. EX: Power plants.
Rotating a habitat is a hard problem in space or on a planet. But, Mars's is gravity would make the problem easier not harder. The atmosphere might be a problem, scale might be a problem etc etc, but gravity is not. Further, there may be little need for 24/7 1g, perhaps a tiny room to work out in is enough, perhaps you should sleep in 1g or perhaps 1/3 is enough for sleep etc.
But, again gravity is not the problem. And yes such a massive fundamental failure in understanding is a clear sign of incompetence.
https://en.m.wikipedia.org/wiki/List_of_revolving_restaurant...
The example on that list that I had been to most recently is the Westin in Atlanta.
It's 57M in diameter and it's upper floor spins at once every 30 minutes. Plugging that into Mω²r, you end up with 0.0000354084g.
Not exactly the best example.
>You need life support, food, water etc.
We figured all that stuff out ages ago. We can already recycle air and water and have been doing so on space stations for decades. Food can be supplied by resupply missions, and also grown on-site; it's not that hard. You're completely overstating the problem. If you think that running a small space station is somehow far harder than running a habitat on Mars (where you cannot control the gravity at all), which seems to be what you're implying here, you have no idea what you're talking about, and I think you're being intellectually dishonest to boot.