Yes, but neither company is great at publishing cross-platform apps. I gave the "network effects" example to point out that "killing Snapchat" wouldn't be so si

Yes, but neither company is great at publishing cross-platform apps. I gave the "network effects" example to point out that "killing Snapchat" wouldn't be so simple as having built-in iOS functionality - because the people that Snapchat users like snapchatting with are already all in Snapchat and might not carry over to a new platform-only service.