[karaterobot]

I'm not sure what "isolating" means in "isolating you from the vast majority of people who don't use it".

I'm assuming you're saying that, since FF has a low browser share today, Mozilla focusing their effort to improve it would be wasteful, because that would be putting more resources behind a product that isn't popular.

If so, I wonder how that's different from any other company that wants to grow their market share. They probably face many of the same choices, e.g.: keep your core users satisfied, or try to bring in a new market. It's pretty intuitive to me that putting ads in Firefox would alienate their current core users, but how would putting ads in FF bring in new users? Wouldn't the result just be fewer people using Firefox?

If what they care about is the mission, then that seems like a bad idea. If what they care about is revenue, then I wonder how the non-profit Mozilla Foundation, which oversees the Mozilla Corporation, squares that tradeoff with the mission they exist to serve.