Comment by moody__

> Like all those magazine subscriptions make their money off ads. The idea that a business can't survive on its own is fine, no?

This is not quite the same, if a single magazine starts to become more ads than decent content it is not insurmountable for another company to start a competitor. It's not ad income itself that is bad, it's that in the case of a web browser it is insurmountable for a company to start up a competitor from scratch. It wasn't always the case, but because google has dumped so much engineering in to chrome they've effectively pulled up the ladder behind them.