

You don’t need a static IP, you just have to keep track of what your current dynamic IP is.
You still need a public IP address. More and more often, IPv4 services are provided behind CGNAT, which won’t be able to work as you describe.
If you don’t have a public IPv4 for your LAN you can use IPv6. Or, you can reverse proxy your services through a gateway with a public IPv4.
I use a a reverse proxy (Pangolin) running on a VPS. A Newt tunnel connects my LAN to to Pangolin, exposing my local services via subdomains.
/edit; vpns are good and all, but they require you to setup software on the remote device to connect to it, and that typically routes most if not all your traffic back to the vpn server then out to the internet. That can create speed/bandwidth issues.
Tailscale, ZeroTier, and other similar services generally establish direct tunnels between devices, without a separate VPN server. They use a central service merely as a sort of common meeting point (STUN/TURN) for the devices to figure out how to establish direct tunnel(s).

Every real estate agent, every mortgage broker, could see the fraud in the housing market long by 2003, but either didn’t recognize it as fraud at the time, or didn’t care. They were all making money hand over fist to prop it up.
Zero down payment, 110% LTV mortgages, seller-paid closing costs, buyer is receiving a $3000 check at closing? ARM set to triple their rate in a year? Completely absurd, but the agent is only getting paid if the deal closes. The mortgage broker is only getting paid if the deal closes. The lender is only getting paid if the deal closes. The seller is only getting paid if the deal closes. Everyone needed this deal to close, so they did what it took to close the deal.
Lenders were offering “Continuing Education” credits that RE agents needed for their licenses. That “continuing education” consisted of seminars coaching agents to encourage these deals.
By 2003, buyers were underwater with their mortgages as soon as they signed them. Yet it took 5 more years for the bubble to actually burst.
The circular financing ponzi scheme behind AI will survive until someone can’t service debt. What happens then is either the collapse of the whole scheme, or the government declaring them “too big to fail” and allowing them to reorganize into a single corporate entity.