

What you describe is basically a MSP (Managed Service Provider).
Most businesses that will seriously consider contracting will definitely want some SLAs and you’ll need to have the resources (technical, knowledge, human) to keep it afloat and a solid implementation plan, which is not a small undertaking.
But if you’re willing to do the work and you’re serious about it, I really hope you succeed and that would be a great way to advocate for FOSS.







Do a traceroute in both scenarios, that should give you a clue where the traffic goes and where it stops.