This sounds great. It seems to me that one of the problems with offshore wind is, as you say, the upfront set-up cost, which scares the politicians currently in power, as they fear having to find that money from their budget, only for the benefit of cheap power to be enjoyed by their successors (viewing this in purely in terms of money and votes, as politicians do).

If this system can generate more power from less infrastructure, it might tip the balance in its favour. Greater uptime is also a big plus for grid stability and reduced storage needs.

Having to switch wind power off because it's too windy, or simply generating more than the grid can use and store when combined with photovoltaic on a sunny, windy day (as happens here in Spain), is a really bad look which can be exploited by denialists.