Oh my no. There's the plethora of Web APIs to attend to, with ever new things that require support in order for websites to work. And each of those creates comp

Oh my no. There's the plethora of Web APIs to attend to, with ever new things that require support in order for websites to work. And each of those creates complex security concerns. The js spec is ever moving, with new syntax and features. Accessibility concerns interact with all of these other parts. It's "normal" to ship complex desktop apps deployed to the browser now. And THEN, after all that, you need to maintain backwards compatibility with old standards. You basically need to handle an operating system where the VM is built on top of your browser, with all the security responsibilities and changing demands of developers working on your platform therein.