I don't see how it stands to reason that this is a function of large corporations. Rust has been further along this path given their relative ages and Mozilla is no where near the size or scope of Google. Likewise with a number of other languages that have official or otherwise LSs. Same story with Cargo out of the gate, vs Go modules after nearly 5 years of pain without them, etc.

Edit: I sound more negative than I meant. I am excited about this. It was cool that Sourcegraph and the VS Code extension pioneered here, but it's exciting to have official support and a place for everyone to rally for improvements. I look forward to seeing this used in things like Theia, VS Code, etc.