So why should anyone trust any company to host their equipment, bitcoin miner or no? There are reputable hosting companies, you just do your due diligence, like any other business.

You yourself have said your plan to build a datacenter is to rent the space out to other people and "also use it for housing miners" with your attitude you would have no customers because you are an unknown entity and might be viewed as one of those "shitty crooked people out there..." I doubt you are, but you can see my point.

I've been mining with my gear with various hosting companies for over 5 years, once it became unprofitable to mine at home, and without experiencing these shitty crooked people you speak of. Oh I know they are out there you just gotta steer clear of them.

Similarly you have to have to steer clear of shitty crooked people who will  rip you off when buying and selling equipment, you don't want a repeat of the "fiasco with one buyer that cost me over 10k" so I can understand you being a bit gun shy of trusting anyone.

You live and learn with this stuff, like anything. But you shouldn't cut off your nose to spite your face, it could be that its more profitable to use a hosting company than try and build or run one yourself.