Netflix begins testing pre-roll ads
motherboard.vice.com
motherboard.vice.com
If they make the pre run ad unskippable, or interrupt the programming and insert ads. I'd consider cancelling, if I could not pay a couple of dollars extra a month to have ad-free content.
Incessant advertising why I dumped cable tv (Monthly subscription + 20 minutes of ads for every hour of programming).
I don't buy much of anything which is advertised. Ads waste my time.