It really depends on what the app you're developing requires. My app is just a few buttons for inputting data. I don't need context menus, multiple monitors or text selection. Thanks for the downvote though.
Although true, HTML doesn't let you customize context menus or (easily) open multiple windows either, and UI interactions frequently lag, but it's used for general desktop development all the time. These issues seem to be more that describing something as for desktop development raises the bar fairly significantly in terms of expected feature set. That's reasonable, but we should be careful in describing something as unsuitable because it lacks things HTML also lacks.
FWIW, I don’t consider web applications to be a suitable replacement for native desktop applications, not the least because they lack support for desktop UI conventions, which do exist for a reason; although it is true that many people nevertheless make do with web apps.
