The problem is these think-tanks or variants thereof might end up representing the tech industry in most places where it matters anyway, just like how most of the standard bodies have been taken over by them and now slowly approve of features that further their business motives (I am looking at you ITU).
Two ways (there must be more?) I can think of to fix the behaviour of these behemoths:
1. External: Internet Activism. This has been well underway for a long time now but the corporates are patient beasts. The problem always remains gathering enough support [1] and generally the short attention span of the larger populace.
2. Internal: The employees. Be critical, put yourselves in akward situations, start demanding answers [2]. The problem might be risking job security? That could be offset by forming a large enough group?
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[0] https://news.ycombinator.com/item?id=17420849
[1] Btw, the signees of this letter care about your privacy: https://www.eff.org/document/december-2018-preemption-letter
[2] https://demandprogress.org
/offtopic https://firstlook.media is doing a great job. Almost all their articles are of high quality.