LSP is definitely an open standard and you can make that work just fine. What I mean is that the components of VS Code itself that do remote execution are not open source, so if it's VS Code that you're running, you're a bit at MS's mercy for how you make it work (my current issue is that it downloads a VS Code remote agent into the container, and that download doesn't work right inside our corporate network, and there's no way to modify that).

If you're not running VS Code, then this isn't relevant to you and I'd imagine you can get a good experience via Neovim using LSP + netrw.