Verizon FIOS residential fiber.

(I've never had an ISP that allowed hosting HTTP servers in its TOS. But I've always hosted HTTP servers, and I've never had any issues. FWIW Gemini servers are also servers.)

Same, although I'm no longer doing what you're doing. With today's average bandwidth usage, I don't know why an ISP would seriously give a crap about someone hosting an HTTP server on their home IP unless it was dealing with some insane amount of traffic.

since they want to sell the more expensive business plan. And forbidding something in the terms makes it easy for them to cancel your account in case they have a different reason.

We make people pay for a business account and extra on top to get a static ip. The amount of support from people that know just enough to think they need to do home hosting is a multiple more than a typical home user.

The people that actually know what they are doing have to pay more but I never hear from them.

This sounds just like my experience with Comcast Business.

Except, because I came with my own modem, they won't let me get the static IP. They would need to come back to my place and replace my modem with their own version of that same modem, they tell me, before they will be willing to take my $50/month to give me a static IP.

I told them I would agree to this if they would at least not charge me for the modem, but apparently this is not possible. I might try again one day, but really am just waiting until my area gets the local electric company's fiber connection they'll be rolling out in a couple of years.

Much as I loathe Comcast residential service, their business service has been solid except for that ludicrous requirement.

But I'm not allowed to have a business account if I also have HBO. Because I might be having large public viewings at my residence, I guess? Go Cox.