Re: I presume
Oh, absolutely, and Microsoft are super keen to ensure that you get value in return for all the ads.
Windows 10 Pro, for example, is a $2700 value - but because of the ads, and the telemetry, and the fact that you have so generously agreed to volunteer for the mandatory beta testing, they can bring it to you for the low, low price of only $100.
Over a $2600 saving! Just for watching a few¹ adverts!
² - well, hundred³
³ plus a few zeroes, ish