You can rent space in your local datacenters. If you're a business, you probably rent by the rack (and can more or less do what you want in the rack subject to power limits and datacenter policies). If you're an individual, most datacenters have some shared rack space (with controlled access, for some value of controlled - usually a datacenter employee has to be in there with you) that's rented by the U.

I put a box of mine in a local datacenter, to their... endless confusion (not only do they not deal with random individuals that often, I actually read contracts so asked questions about why I had to prove my worker's comp payments and some other weird stuff that they removed). Monthly rental payments are about what I was paying in a range of cloud spend, but the system is far more capable, and I can do a lot more on it.