Colocated / Dedicated is not Cloud, AFAICT. It's the "traditional hosting", not elastic / auto-scalable. You of course may put your own, highly tamper-proof boxes in a colocation rack, and be reasonably certain that any attempt to exfiltrate data from them won't be invisible to you.
By doing so, you share nothing with your hosting provider, you only rent rack space / power / connectivity.
At least you can get your own /48, at least if you're under RIPE.
You should only do it if you expect to multihome though, or you're doing some experimentation that absolutely needs a PI address. Please don't pollute the default-free zone just for no reason.
By doing so, you share nothing with your hosting provider, you only rent rack space / power / connectivity.