"an office address in space for businesses"
Stupid. Utterly stupid.
An office address is useful for being close to where you produce something. Even if it isn't tangible goods, space is an environment where there's nothing.
And it costs millions to get there. And it dangerous to human health to stay there too long. Plus, the walls of the station are paper-thin, they can be breached by a pebble of sand. And to take a shit you have to shove a tube up your ass. Not to mention the food is pre-chewed.
I very much doubt any CEO of any company is going to enjoy being in space for business purposes. Sure, fucking the secretary in zero-G won't get old soon (or will it ?), but the sheer fact is that, while he's up there, actual business is happening down here.
And let's not forget that blasting off from Earth is not 100% certain to get you into space. You can also be blasted to bits.
It is way too early for this kind of project.
Now, when we have a functional space elevator, or some other way of getting people into orbit with 99.999% reliability, then we can start looking into mining asteroids and yes, that will be a time to have an orbital business space.
But until then, get access to space secure first.