Pokiarchy

Ok, let me evaluate the situation for everyone to the best of my knowledge.
The problems of converting laptop lcd to desktop lcd.
1) Laptop lcd is digital, desktop lcd is analog.
2) Would need a controller to convert from lcd to rca or vga.

Is a controller the cheapest way? What would it take to have my desktop act more like a laptop in this sense? Can I maybe use 2 mother boards, the one from the laptop then link it to the main motherboard? What's stopping me from making my desktop a big *** laptop? Is there no software/hardware for this? Thanks in advance for not being an *******.

Edit: Laptops have docking stations to make them more like a desktop, is there maybe some hardware to do the opposite? This is such a popular topic all over the internet i figgerd maybe some young entrepeneur tried to make some money off this.