Jon Stewart ironically fits that bill:-). Which brings up one reason why that tends not to happen: most people upon any brush with politics immediately want to get as far away from it as is humanly possible. Just running into Ted Cruz in the hallway may all be itself trigger that kind of flight response:-P.
So what "needs" to happen is not the same as what "will" happen. Always remember the implied second half of that type of sentence: "in order to survive, needs to happen". But not everyone gets what they need to survive, and the same holds true for nations.
Though the above two paragraphs may seem unlikely to be able to reconcile with what you said, there are ways - like a local project could be done by an NGO or even a non-/not-for-profit corporation, bypassing government entirely. Unfortunately, that power can be used to evil ends as well too:-(. But when it works - like Jon Stewart, and John Oliver - it can be extremely powerful!:-D
Open source software may be a good model to look at. People contribute bc they want to, regardless of any monetary remuneration.
But it's hard, and a for-profit corporation can often move forward more quickly to develop an objectively better project. Except even though they *could", they (usually) don't, and really they have zero reason to, bc their goal is to make a profit, not a product. Reddit vs. Lemmy/Kbin/Mbin/etc. is one such example.
But it gets complicated bc of all the counterexamples, like at one time Google really was awesome, and free, so most of the open source projects did not push hard to replace it, bc it worked so well for so many. Similar to Lemmy I suppose - before the Rexit it had existed for many years, but it wasn't until that shakeup that it was propelled forward extremely quickly by the influx of developers, e.g. who made the front end apps. Before that, the Reddit experience was fairly good even if not great, so not as many people bothered.
Necessity is the mother of invention.