Around the turn of the century, there were a few vendors doing this same thing - cheap PCs, subsidized by advertising on the desktop. It was a dismal failure then, and it'll be a dismal failure - one hopes! - this time round.
Of course back then, as someone above alluded to, there wasn't the likes of Pluton and TPM and SecureBoot to ensure that the PC only booted what makes the vendor moneythe best, most exciting software optimized for the user with carefully selected premium offers...
The icon is because I think I just threw up a little on my keyboard typing that last phrase.