Earlier quoted context omitted.
What's your idea of "survival"? Wikipedia has already been bleeding editors for a long time as the overall climate on the Web has shifted away from openness and towards profit-seeking and mindless consumption. They portray themselves as "essential infrastructure in the ecosystem of free knowledge" which looks like a factual and fair assessment to me. This is what must survive for the foreseeable future. It's not just…
Then let those projects fight and advertise for themselves. People donating to wikipedia only want wikipedia, they are unaware of the other stuff wikimedia does. Those projects would crash and burn though, because frankly, no one cares about them. Stuff like wikidata and SPARQL endpoints are an academic curiosity with no real value. The semantic web won't happen, articles do and will. In addition to that, the whole d…
On the contrary, Wikipedia itself has a lot of reliance on the other projects. For example, Wikidata solves the problem of interlinking Wikipedia languages and other projects when they're hosting content about the same real-world entity. In fact, this was Wikidata's MVP - the reason it got funded in the first place. It then took off from there.
Wikimedia Commons is a similar story - in addition to the obvious languages issue, there are a lot of concerns about media (such as licensing. enhancement etc.) that really are best addressed in a dedicated venue, with its own committed contributors. This has been very beneficial to Wikipedia itself.