I think (I speculate) it's for the same reason Fujicolor is now made in the US. It seems Fuji is phasing out the film business.
As far as I know, Harman's production of Acros is not a transfer of license, but a subcontract. And maybe whether there will be a sheet film is entirely up to Fuji. But again, that's speculation.
But what is clear is that the availability of Acros and Fujicolor has not been affected like, for example, Velvia or Provia.
About the prices - this is an interesting topic. We have no way of knowing what the production costs are and what the contract with Harman is, but after a short search, I see that the Fuji Akros is sold in Japan for 2080 yen or 13 euros (tax included). Almost the same, a little cheaper in Europe, where there is an average of 20% VAT and maybe some customs duty, I don't know what is happening between the UK and the EU. I don't see any paradox in this regard.