But we do need a gatekeeper - that's where you're wrong. Without it, we don't get a fair review of licenses by people most adept at understanding what Open Source is. Without it, we will go back to the wild west of licensing where we have hundreds of OSS licenses that each have their own little clauses and are written by developers, not lawyers, so they don't really hold up in court.
Open Source is for corporations to benefit from FOSS without the need to spend exorbitant amounts to acquire such functionality. But corporations are bound by a set of rules to operate, and as such, so should OSS licenses.
If open source were to revert to the old-style, write your own license if you want to, corporations will have a much more difficult time accepting the new software. OSS will probably die a nasty death, and we will go back to tons of proprietary software running the biggest apps.
The OSI is non-political and for you to argue such is silly. The organization has one goal: to make open source easier for business. What political nature can you see in there? Do they ever restrict anyone from making money off their creations? (The answer has always been NO)
So some developers want to make money on the more advanced features of their open source project. Well, if it happens after software has been around a long time (ala Redis) then people are going to complain. It sucks to have to go from a free model to a for-pay model, but I understand the motivations. I don't think any developer should be kept from making money for their work, but if they want to make money off of something AND control the source, DON'T call it open source, call it proprietary because that's what it is. The source is provided, yes, but that doesn't make it open source. To truly be open source it has to abide by the OSD and Commons Clause definitely does not.
So, is it time for new open source licenses? Maybe, but they should be governed by some committee and the OSI exists so why not them? You're arguing that we should move into an anarchist style of releasing open source... The time has come to make money!! Well, again, that's basically what proprietary software is all about.