Ads seem to be a modern virus that infects everything. Everyone who claims "no ads", eventually turns their back on that once they get big enough, even companies with more than enough money from their own products (e.g. Apple, Netflix). I've never seen anything so powerful. I guess it comes down to "no business would say no to free money", but it really is incredible.
I felt this way for a while, but I’d like to offer another angle: maybe it’s like saying “Every company eventually hires tall people. Some have no tall people, but it’s just a matter of time. Tall people are really an unstoppable force.” The missing piece is also observing short people (ad-free offerings), which you’d notice are not being eliminated, are also prevalent, and also “infect” everything. I think the unstoppable force being felt here is just statistics: ads are often an option, companies make a lot of decisions, it’s statistically inevitable that some of those will be ads, unless the company has some strong aversion to ads, which most don’t.