Try to start a hosting business??

It is a hard sell market

Right, exactly. Not only that, but the industry is basically 98% scumbag confidence men and thieves (e.g. any number of brands run by Colo-Crossing). You will be trying to make a name for yourself in a field dominated by some of the worst people you'll ever meet. Even if you make it out of the cesspool to the top and start competing with businesses that are more or less honest (because they make enough of a margin through volume that they can afford honesty), you're competing with the likes of Digital Ocean, Ramnode, Linode, OVH, or even AWS, Rackspace, Google, Azure, etc. Basically, people that know what they're doing and have pretty loyal customers (loyal because of having dealt with the dishonest majority of hosting providers). If you do decide to go this route, managed hosting service with some kind of bespoke development (e.g. web development) services is probably your best bet, and don't skimp on the customer service even once.

I mean, do whatever you want, but as someone that's had to work with this industry for fifteen years, I recommend against starting a hosting business.

Not BitCoin (before someone posts this)

How much would someone even stand to make running Bitcoin hashing 24/7 in this scenario? Not much I'd imagine.

Why not?

It's not very efficient compared to specialized mining hardware. I haven't done the math but your return will probably be <<1% of the credits.

Well, it's free servers, so whatever he can get out of them will be good.

I believe (from rumours of friends) that most servers actually ban bitcoin mining on their system anyway.

Only the naive believe something is "free"

I can run two machines with 64GB RAM & 20 Core CPUs for the whole year 24/7. Do you still think the return will be less than 1%? I am just wondering how others do mining.

Bitcoin mining is done with clusters of specially designed ASICs these days. GPU mining, let alone CPU mining, isn't viable by a long shot. I'd be shocked if you got any payout at all from a mining pool with it.

Much much less than 1%

is there a reason?