Earlier quoted context omitted.
But due to insurance churn, you don’t want to be footing the bill for your competitor down the road. As an insurance manager, your unit of analysis is not healthcare system or society, but your quarterly bottom line.
Sounds like a great argument for Medicare for All, the NHS, or other nationalized systems.
There's a good chance that NICE won't be willing to fund these treatments at all. Which is in no way a criticism of them (QALY is the just the most sensible semi-objective thing to base these decisions on) - but is worth highlighting when you say "free healthcare for all".
It's only free for the healthcare considered to be good enough value for money.