They are already selling. This acquisition won't affect that. It will help them get more publicity with more resources and more expertise. The numbers will be going up, not down.

That seems to be the state currently, but you just never know. BufferBox, a YC alum, was bought out and subsequently dissolved within a couple of years despite their momentum before being acquired.

That being said, Google X operates very differently from rest of of Googleverse.

You don't think Waze has gotten significantly worse since they were acquired by Google?

The problem with taking vague rhetorical stances like that instead of actually stating how you think it's gotten "significantly worse" is I have no idea what aspect you're talking about, so it's difficult to empathize and try to imagine the downside you're seeing.

I'll go out on a limb and say no, not at all, especially with the qualifier "significantly" on there, which I would take to mean that even the casual Waze fan (like me) should have noticed what's going wrong there.

I don't particularly care about some of the new features like sharing location with friends, but I just don't use them (and they seem plausibly like things they would have added anyway, with or without acquisition).