Even if we ignored the immediate collapse of the world economy, if you were starting from scratch how would you get anyone to take risks and put money/time into creating a business?
Even if people did decide to do it, no banks would be able to lend to you (what banks? They need a massive amount of money to start) as they would have absolutely nothing as collateral.
You cannot get a grant for a hybrid heat pump system (for example a combination of gas boiler and air source heat pump).
I think it just requires you to have a heat pump for all your water and heating. There appears to be pumps that do both, (mentioned in this article) but that's more research than I can get away with while 'working'.
Now looks stable, will see if he can make it work.