You could flip it around and ask - given that phone chips are approaching desktop level performance, how native do you need to go? We're already seeing native a

You could flip it around and ask - given that phone chips are approaching desktop level performance, how native do you need to go? We're already seeing native apps become less "native". Using high level frameworks that provide a common core between platforms is pretty standard nowadays. IMO the biggest driver already is and will be app store/platform policies. Fundamental hardware constraints are secondary.