> You would in essence be able to build your own perfect word processing environment (for example), by bringing Company X's editing tools, Company Y's grammar c

> You would in essence be able to build your own perfect word processing environment (for example), by bringing Company X's editing tools, Company Y's grammar checking and spelling tools, perhaps some embedded spreadsheet tables from Company Z if you were writing business reports, and so on. Tree-sitter, LSP, various linters -- we're getting there!