[Houshalter]

2 and 3 aren't really restrictions. I can download multiple libraries worth of books in an afternoon. I can buy a PC for a thousand dollars that is basically a supercomputer compared to computers 20 years ago, or even 10 years ago.

The biggest reason I suspect it will be solved by one person is it's "just" a math problem. Most of the hardest problems in mathematics were solved by a single person. Building off of the works of others of course, but rarely in some big team or corporate project. 9 women can't have a baby in 1 month. The research process of big corporations or even academia isn't really amenable to actually solving hard problems.