2) Seems the most plausible, but how to value the moat, or, how long / how many dollars will it cost to overcome the moat? The lead that CUDA currently has sugg

2) Seems the most plausible, but how to value the moat, or, how long / how many dollars will it cost to overcome the moat? The lead that CUDA currently has suggests that it's probably a lot of money, and it's not clear what the landscape will look like afterwards. It seems likely that the technology / moat won't just melt away into nothing, it'll at least continue to be a major player 10 years from now. The question is if the market share will be 70%, 10% or 30% but still holding a lead over a market that becomes completely fractured....