By the mid 70s that effort had largely run of steam - certainly in the UK, and probably also in the US. I don't know enough about Soviet Rrrrussia to say anything plausible about what was happening there, but the Soviets didn't seem to have a similar innovation culture, and never really got over their pseudo-Lysenkoist ambivalence about science.
By the 80s a lot of these middle ground enterprises were dead, dying, or on life support, which suggests they can't really have been all that responsive.
