This is true about incentives, but it's also how pretty much all bad stuff in the real world actually happens, rather than black hatted evil-doers twirling their mustaches (though there's a bit of that too).

Some consider "incentives matter" to be a good two word summary of economics, it would be great if people bore that in mind when dealing with corporations, rather than treating them like local sports teams.

Though I think in this case, Firefox and Google actually have their incentives pretty well aligned, with each other and the general public (generally "make web video better"), it's just a matter of timing.