Hi, I work for Mozilla and I co-edited the W3C Touch Events standard. Some personal opinion follows...
Mozilla previously (before my time) did some work on multitouch events for early Windows touch PCs, but we don't have much influence in the mainstream mobile market because unlike other browser vendors we don't (yet) have our own mobile platform. In the current mobile market, Apple and Google have a lot of power to create de facto standards. It doesn't matter much if Mozilla evolves the API or creates our own alternative, unless the big mobile vendors agree to ship it too. (Google has participated in the Touch Events standardization process, but Apple has refused.) For example, Firefox is currently the only browser to implement some of the experimental features in the Touch Events spec, but that doesn't mean anyone will use them. Microsoft may have a chance of getting web developers to target a new API, but only because they can leverage Windows Phone and Windows 8.
The touch event standardization effort ground to a halt for much of the past year due to Apple (who is not participating in the working group) disclosing patents they claimed should block the standard. While work recently resumed, the future of touch events as an open standard is still cloudy.
With an existing de facto (but potentially non-open) standard, and an interesting (but non-standard) alternative already coming from Microsoft, the last thing we want is to further fork the platform by going off in our own, third direction. I would love to see Microsoft propose their Pointer Events API for standardization. That would provide a great way forward, and doing it within the W3C would let other vendors contribute, while requiring Microsoft and other participants (unlike Apple) to provide open licensing of any essential patents they hold. But without MS on board we would risk a repeat of the Apple patent issue. So for now it's partly a question of what Microsoft will do next.
In summary, I think we have some useful options, but realistically they depend on at least some of the mobile platform owners cooperating to move web standards forward.
Mozilla previously (before my time) did some work on multitouch events for early Windows touch PCs, but we don't have much influence in the mainstream mobile market because unlike other browser vendors we don't (yet) have our own mobile platform. In the current mobile market, Apple and Google have a lot of power to create de facto standards. It doesn't matter much if Mozilla evolves the API or creates our own alternative, unless the big mobile vendors agree to ship it too. (Google has participated in the Touch Events standardization process, but Apple has refused.) For example, Firefox is currently the only browser to implement some of the experimental features in the Touch Events spec, but that doesn't mean anyone will use them. Microsoft may have a chance of getting web developers to target a new API, but only because they can leverage Windows Phone and Windows 8.
The touch event standardization effort ground to a halt for much of the past year due to Apple (who is not participating in the working group) disclosing patents they claimed should block the standard. While work recently resumed, the future of touch events as an open standard is still cloudy.
With an existing de facto (but potentially non-open) standard, and an interesting (but non-standard) alternative already coming from Microsoft, the last thing we want is to further fork the platform by going off in our own, third direction. I would love to see Microsoft propose their Pointer Events API for standardization. That would provide a great way forward, and doing it within the W3C would let other vendors contribute, while requiring Microsoft and other participants (unlike Apple) to provide open licensing of any essential patents they hold. But without MS on board we would risk a repeat of the Apple patent issue. So for now it's partly a question of what Microsoft will do next.
In summary, I think we have some useful options, but realistically they depend on at least some of the mobile platform owners cooperating to move web standards forward.