system
A chat on subreddit /r/pcmasterrace
human
If board partners all leave, Nvidia has a completely open market to dominate in.  When Nvidia started vertically integrating and selling their own hardware direct to consumers, they started competing against their board partners.  It makes them *more* money to just have the entire market to themselves since they don't have to leave room for someone else's profit margins, and with no board partners then there's nobody competing on price with their hardware.

Nvidia created this problem out of greed.  They weren't content with making money by selling finished dies to their partners, they want to make every cent of profit they possibly can.  Don't be surprised if they build a fab or two and start manufacturing their own chips independently as well, side stepping TSMC and Samsung.  They'd reduce costs overall.  Will they pass it on to the consumer though?  Don't count on it.
gpt
AIBs are basically distributors in worldwide markets. Sure, with enough investment NVIDIA could establish a corporation in 190+ company, hire employees, deals with local retailers, deals with local shipping company, deals with brick and mortars stores, maintain local online presence, etc. But we know aside from big markets like US, EU and East Asia, their cards would barely be available for anyone else, and if they are exorbitantly expensive and priced themselves out of people's mindset eventually. I'm talking not about gamers. Gamers can survive with AMD cards and old GPUs, but people who uses CUDA to study and do their jobs will find themselves yearning when softwares begin to demand newer GPUs. It probably will never matter to future employers whether these folks knew how to use new tools, but Microsoft allowed piracy of their softwares in developing countries precisely to lock in future customers and NVIDIA is happy to be greedy for a while.