Why do we have ports at all? Except 80 and 443 many ports are blocked anyways. I'd say there is an arms race between admins and users. Step by step features ge

Why do we have ports at all? Except 80 and 443 many ports are blocked anyways. I'd say there is an arms race between admins and users. Step by step features get forbidden and blocked usually in the name of security. For example, NAT took away your globally visible IP address. The next step is probably blocking domains. In a dystopian vision, Google and Facebook become the proxies for all traffic as all other domains get blocked for most users.