[DanBC]

Yes, probably.

Windows 8.1 with Bing (come on, who thought that's a good name for an OS?) has tiles that are ads for aps and games in various stores. No searching needed, these ads are baked in and served when you click start button. (Or whatever that's called now.)

[TeMPOraL]

For context (to explain your "probably") - Ubuntu in its Unity UI serves Amazon product search in its "start menu".