Or the gov comes in and insures the whole industry, as they have for nukes for decades.

Having the government insure the offshore turbines would be better than private enterprise insurance anyway, given the current status of insurance companies generally and AIG in particular.

I do have a question that someone may be able to answer: would not offshore wave energy production be better than offshore wind energy? Why are we assuming that wind energy is going to be the main component of offshore energy production?

Because industrial experience with wave energy is still insufficient to take it for viable and competitive with wind energy.

In general, wind and wave energy density are correlated; the best sites for one are near the best sites for the other. If both modes are co-located, transmission infrastructure and maintenance effort can be shared.