Other browsers? Like what? Opera? Doubt we wouldn't hear of it.
> HTC has grown 3x every year for the past 2 years because of Android,
Sure... but just remember that HTC came out from being an ODM for HP and Dell to make Windows Mobile devices and then made a lot of Windows Mobile devices for a long time, which gave them a ton of valuable knowledge about how to make smartphones.
Google is the one that needs to indemnify their OS and make companies like Apple and Microsoft think twice about trying to charge patent license fees.
Remember that Microsoft isn't too happy with the current state of patents and tried a lot (see the Bilski case) to to reduce the burden of proof placed on the alleged violators. If they had succeeded, they would've weakened their own patent suits substantially but they seem to be okay with that.