Regulations have been waay too lose on, especially, american ISPs where I understand they are allowed to not only refuse you a public routable IP but also dictate what kind of traffic you're allowed to send and receive (for example, whether the traffic flowing is of "commercial" character and therefore should be on on a different subscription), this insanity should be illegal. Internet is a utility, and everyone should have the right to the same type of access, regardless of their need (those who do not need/want, can simply chose not to use it, but ISPs should not be allowed to differentiate).
I've hosted my own web, and other servers on my own hardware since I was 13 years old, when I bought my first domain, I had to use a fax machine for the first time in my life, and fax my request form, along with my passport, to the agency responsible for the top level domain of my country. It was kind of convoluted back then, but everyone were helpful, and it was not that difficult, the technology was well understood, supporters were competent, and it was expected that people were going to use the internet for internet things. Today is my 39th birthday, and while the server hosting my stuff is mostly still located 3 meters from me, the path to having it online has nothing but degenerated, it's an uphill battle just to be on the internet these days.. The mail stuff is the easier part (dkim, dmarc, spf, certificates).. But the simple act of getting your f..king computer connected to the f..king internet like it was 1999, that's the real hassle.. ISP NAT, supporters beyond incompetent, blocked ports, missing (or unknown) relay hosts.. It's a joke.