> I would rather use Rust for the fact it's development is not tied to a big tech company which could abandon it if they liked.
Go's development is tied to Google Inc. and is widely used at Google. Same with Microsoft's C# with .NET and Swift isn't very different to this as long as it is open source.
So this really is a moot point.
Objective-C had its own open source source implementations, along with a better cross-platform story than Swift has ever had, and yet Apple's abandonment still managed to reduce it to irrelevance.
IMHO your case for a moot point would be stronger if you also mentioned which company you feel is tied to Rust in the same way as the other languages you've mentioned.
Go has a critical mass that Swift clearly doesn't (i.e. there are many, many companies who have net profits of >$1bn and write most of their server software in Go).
Additionally Google isn't selling Go as a product in the same way as Apple does Swift (and where Google does publish public Go APIs it also tends to use them in the same way as their users do, so the interests are more aligned)...