Rust and Go could help you there, and their deployment story is as excellent as C/C++: just compile and ship.
However, their learning curve is pretty steep (particularly Rust) and most developers don’t enjoy having to worry about low-level issues, which makes recruitment and retention a problem. Whereas one can be reasonably proficient with Python/Ruby in a week, Java/C# is taught in school, and everyone has to know JS anyway (thanks for nothing, tweenager Eich), so it’s easy to pick up manpower for those.
Do those highly available developers have the same quality as the Rust developers you could get, though? (On average.) I'd wager there is a correlation between interest in deeper topics as required by Rust and good long term design and quality. I've seen how marvelously efficient a small team of very talented people can be be. To replace them with the average highly available developers you would need far more than doubly the people and some extra manager, just because communication scales so badly. The 10x developer is a myth, but I think the 5x development team is realistic in the right circumstances.
Disclaimer: Neither do I claim to be a very good developer, nor do I think you, the reader, is only average. Just given that you are reading Hackernews is a strong indicator for your interest in reflection and self improvement, regardless of your favorite language.
The problem might be that those people interested in learning new things, solving complicated issues and building good long-term architectures are usually not too interested in sitting in a cubicle without a window.
So big companies might be forced to settle for less skilled developers, simply because the top tier is doing their own thing. I assume that's also why acqui-hiring is a thing.
Cubicles? You're too kind! Open floor plans are so much more 'creative' and 'communicative' and storage efficient. Also, they look so nice when you have visitors. (No joke: Our CEO told us he was so impressed with the office of this other company he visited – after being there once and not talking to the employees specifically about how they liked it! I'm shocked again and again how many decisions top managers like to make without listening to those it affects.)
However, their learning curve is pretty steep (particularly Rust) and most developers don’t enjoy having to worry about low-level issues, which makes recruitment and retention a problem. Whereas one can be reasonably proficient with Python/Ruby in a week, Java/C# is taught in school, and everyone has to know JS anyway (thanks for nothing, tweenager Eich), so it’s easy to pick up manpower for those.