> I think you're wildly underestimating the heritage foundation.
It's possible that I am. Certainly they've had some success over the years, as have other think tanks like them. I mean, they're part of the reason we got embroiled in the middle-east after 9/11. They've certainly been influential.
That said, their problem is that they are true believers and the people in charge are not (and never will be). Someone else in this post described it as a flock of psychopaths, and I think that's the perfect way to phrase it. Society is run by a flock of psychopaths just doing whatever comes naturally as they seek to optimize their own short term advantage.
Sometimes their interests converge and something like Heritage sees part of their agenda instituted, but equally often these organizations fade into irrelevance as their agendas diverge from whatever works to the pyscho of the moments advantage. To avoid that Heritage can either change their agenda, or accept that they've become defanged. More often than not they choose the former.
I suppose we'll know for sure in 20 years, but I'd be willing to bet that Heritages agenda then won't look anything like the agenda they're advancing today. In fact if we look at their Agenda from 20 years ago we can see that it looks nothing like their agenda today.
For example, Heritage was very much pro-immigration until about 20 years ago. As early as 1986 they were advocating for increased immigration, and even in 2006 they were publishing reports advocating for the economic benefits of it. Then suddenly it fell out of fashion amongst a certain class of ruler and they reversed their entire stance to maintain their relevance.
They also used to sing a very different tune regarding healthcare, advocating for a the individual mandate as opposed to single payer. Again, it became unpopular and they simply "changed their mind" and began to fight against the policy that they were actually among the first to propose.
*EDIT* To cite a more recent example consider their stance on free trade. Even as recently as this year they were advocating for free trade and against tariffs warning that tariffs might lead to a recession. They've since reversed course, because while they are largely run by true believers they can't admit that publicly or they risk losing any hope of actually accomplishing any of their agenda.