Yes, if you have 100 developers then by all means create native versions for every device, but as a single developer there is no other way for me to provide my

Yes, if you have 100 developers then by all means create native versions for every device, but as a single developer there is no other way for me to provide my app on PCs, phones and tablets other than HTML5. If you're making a one-off game it might not matter for the user that they can't play it on their other devices, but when you provide a service that needs to be available on the go and accessible anywhere, you really don't want to alienate your customers with "only available on iPhone".