I agree with everything you've said about it being most practical to run services on Linux. If OP's business grows I think they'd be wise to pivot away from mac

I agree with everything you've said about it being most practical to run services on Linux. If OP's business grows I think they'd be wise to pivot away from macOS to avoid future pain. But also, if OP sees a business opportunity today, and they've already solved it on top of macOS, I think they should strike while the iron is hot, with the code that exists. Most businesses die because they can't get enough users and keep them. IMO it makes sense to take on tech debt.