We “piggy back” on US innovation - just like many other fields - but (a) we pay for everything we buy from America and (b) we’re still able to offer extended healthcare despite having in many cases comparable - or the same! - technology.
Or are you suggesting that the American people must sacrifice their poor so that Europeans can “piggy back” on the gains?
Or are you suggesting that the American people must sacrifice their poor so that Europeans can “piggy back” on the gains?