I'd switch if they would support the File System Access API. It's a really convenient API and IMO as someone who has worked with it extensively, is very secure. It supposedly has privacy concerns, but I think it would primarily be used for FOSS and hobby projects since Bigco likes to store all the data on their servers anyways, that's a feature and not a bug for them. In fact, I think it would be a security/privacy improvement since it would encourage storing data locally (privacy) and is way more secure than asking users to install a native app (which has access to pretty much everything on the device and not just the directory/file a user gives it access to).