That's cool. Paypal would be nice. Also I agree locking into just one is not ideal, but what I would hope is that C3 itself could offer a solution so we don't have to get into PHP and other technologies. Like I was saying, I know it CAN be done with the right know how, but many of us do not have that know how and are not likely to ever get it.. that's why we're using Construct. :)
I mean heck.. Scirra already has an arcade. THEY could make their own platform and allow us Construct users to make games for it and have a home grown IAP system that works with Construct!
I know Scirra might throw up their arms and say "we don't want to get into that" but they already have the platform. we're just talking about having 1-2 web revenue solutions. I'm not downplaying that the feature would not be trivial, but you gotta admit it's not revolutionary either in terms of complexity. This is very tried and true technology.
This opens up a seriously exciting new space for existing construct users and future construct users to realize they could make their own web games.. either porting existing mobile games to web with IAP or understand now they could make web games that give them a hell of a lot more space to work with than mobile..
Even comparing it to Steam it's a whole other dynamic.. no longer requiring a local installation or having to be used through steam.. games that could be accessed from anywhere (even mobile, if done right) so yea I'm finding very few downsides to this feature consideration.