It is not that complicated. Just pay(monthly)for a storage Box at Hetzner(just an example provider i trust) or any other provider and your Data is still there in 30 years. - https://www.hetzner.com/storage-box?country=gb
From my point of view the term holds another problem. It sounds like you can't use/host the provided "Rendezvous Server" at all and must also write your own to connect the people.
Adobe Experience Manager (AEM/CQ) is at its core open source. But you're right in that manner, that they don't promote these projects or help them to grow.
But the use of an alternative is only possible, if the alternative is on/near the same level of usablity as the product that is market leader. If it's not the case, than most users won't switch and there is also the factor of the "mental burden" to switch to a product you're not used to and stay in the "preferred loop".
I see timescale more as an alternative option, since the OP also aksed for this. - And you're right, since Timescale is an postgresql extensions, it also has the same benefits/problems as postgresql itself in this manner.
Just have a look at Timescale. It's a open source postgresql extension, and can sit side by side with other stuff. Scaling
postgresql should be no problem for you.
It is not about the right to appear in Google's search results. It is about abusing market dominance to put competing businesses at disadvantage. There are also other running/solved cases/investigations against Google.
Sand =! Industrial usable Sand. Not all kind of "Sand" is suited for the industry(today). Most desert/dune sand is to fine grained and has a smooth surface, so that it is unusable to create strong material. There are some projects/studies already that use "desert sand + X" to create "strong" material.
I use also UBlock Origin and there is really clear difference. With NoScript you can Browse most of the Sites without Javascript-Gimmicks like Parallax-News-Scrolling (for example Bloomberg) or On-Site-Embeded-Advertisemet (no JS no Ads). UBlock is nice but without NoScript it is not good enough for my personal taste.
Today Telefunken don't produce any products(they sell only their Brand-Licence to partners), if you buy for example a Telefunken-TV it is produced by Vestel(in Turkey).
I think your expierence in a system/framework or programming language is a key factor in "fast" development and to be honest, the question for the "easiest and fastest" framework is totally wrong and you won't get nothing out of this question. All answers will come from people with different expierence levels in programming, frameworks, projects and many other things - all answers are biased towards the expierence of the person who answers your question.
I think tolkien is a good option for "new" stuff, since there are many written stories in this universe about other characters and the created world by him is massive. There is also a possibility to start with his oldest book "silmarillion".