Problem: Planning on building out a client services company that requires access to APIs. Most APIs are limited based on user, IP, etc. - and even though the API calls would be on a per client basis, there's no way to get usage not tied to IPs.

(Theoretical) Solution: Have each client install on their network a proxy/VPN that would allow my systems to connect and use their assigned usage.

So, it's possible there's a better solution than the one I've thought of, but it's the only one I've been able to come up with.