To me, this is a result of products and companies being built on web stacks. Its easy to prototype, integrates with cloud services/mostly plug and play, and most developers known at least one stack that works in browsers. There's just not as much money in desktop/native application development - users are on the web and mobile. Of course I'd like to see a resurgence of desktop native programs (not electron) but the use cases are diminishing. Its harder to track users on desktop, harder to patch/update, and harder to hire people who know that stuff (always lean senior, meaning more expensive for startups).