What sort of regulation? Make it cheaper by x% per year or we stop using it? Doesn't sound that dissimilar to "make it cheaper than the total cost of the current treatment or we won't use it".
You can't have it both ways and preventing people from making money means, not surprisingly, they will be very hesitant to spend money researching those areas.
Even if it were true, turning a discovery into a distributable, replicable, intervention is the opposite of a trivial task.
And yes, our lovely regulatory environment makes it enormously expensive to study drugs and treatment and to get them approved. Who knows how many lives have been lost by this.
When people talk about for example university research driving technology, I think the practicalities of the real world … aka business aka living in 4dimensional reality … are inaccessible to them. They elide all these pesky details which represent like 98% of what it takes to actually do anything.
Expect tarrifs, sanctions and trade secrets so you won't be able to reproduce future treatments.
"Hey, that's a nice life-saving treatment you spent $500M developing. It would be a shame if we just took it from you."