Semantic web is good if you are making web documents not web applications.

  Have a type and: submit a form; reset a form; or not do anything with the related form.  

No one uses buttons to submit a form in web applications. You use buttons to start/stop/change interaction flow.

Native browser controls are not workable in a modern web application. It is not that developers are lazy it is that you get requirements from businesses that no one would pay for implementing using native controls because it would cost too much to do it right, where right means „how customers want it and how they want to use it” not „technically right like some native browser control nerds feel world should work”.