These two things alone would have increased the safety factor of this project immensely.
If you watched the documentary, those two things would not have mattered. The hull was audibly weakening with each dive. One hull already developed cracks. They just made another hull without changing any thing.
From what I have learned elsewhere, OceanGate was not the first company to make a carbon fiber hull. DeepFlight Challenger was originally made for businessman Steve Fossett. After he died in a plane crash, the project was put on hold. Virgin Oceanic later bought the submersible in 2011 for five dive project. After tests determined the hull was suitable for only one dive, Virgin Oceanic cancelled the project in 2014. This was 2 years before OceanGate started to make their carbon fiber hull.
Buying a patent by the government is merely invalidating that patent, something a government can do for free, theoretically.
That depends on the country's takings law. I'm more familiar with the United States Constitution, which provides: "nor shall private property be taken for public use, without just compensation." Canada's Expropriation Act (fact sheet) likewise guarantees market value to the property owner.
Guess Apple bought all the patents for 3D camera authentication?
Yes Apple bought PrimeSense who probably had multiple patents on 3D sensing. Like many companies that are purchased for their technology and patents rather than their products, PrimeSense no longer licenses their technology to anyone anymore. If PrimeSense sounds familiar, it was the technology behind the Kinect. This was probably the main reason the 2nd generation Kinect was not that much more advanced than the first generation as it was still on older licensed PrimeSense technology. Apple took PrimeSense tech and shrunk it down to make Face ID.
Fraudsters are using AI to create face masks of people to get by these things
How would AI generated masks fool 3D facial scans? That require a 3D printed mask not a simple phone screen.
The only thing you need is money, which Meta has. Hire good researchers and give them plenty of budget for hardware.
Having money is not the problem. They would rather steal it from others rather than spend their own money. In the case of a new wireless protocol; Meta could have done it. They chose to complain that Apple did not give their research to Meta for free.
Where there's a will, there's a relative.