That's silly - if anything it's the other way around. Web tools have a ridiculous degree of corporate backing, especially with the countless libraries from Facebook and Google (React, Angular, Go, Dart, Flow, IMMUTABLE, etc.), and even Microsoft with TypeScript and others. Meanwhile, Make and friends don't have any corporate backing.

None of them can lay claim to the web though, contrasted with other ui platforms like windows, ios, etc.

Plus IE and Chrome, fwiw

The web is pretty much corporate. All the major tools are built by major corporations, all the browsers are developed by major corporations (with the exception of Firefox, but Mozilla gets most of its money from major corporations) all the major web players are major corporations, all the major web monetization is rented by corporations.

The web's no longer an open platform. Yeah you can put up a blog on your own server using only FOSS. But if you want to drive traffic to it, you're using a huge corporate ad network or some SEO company. If you want to scale it, you're using a huge corporate cloud. If you want to make money on it, you're using a huge corporate ad network.

Firefox started out as Netscape so you can trace it back to big company.