I am more accepting of layout changes than say, an unfair playing ground regarding rankings. Their core business is to sell ads and make money off ads. If they push that more, I see that as what they actually do.
The fact is there is a tipping point with ads where consumers/customers say you know what? Those other guys don't have as many, it's cleaner and I'm using them instead. Until then they would naturally do what they can. That's fine.
What I don't like is the bigger threat of big brands, big name sites taking the organic traffic. I think the youtube videos taking up space, pusing our sites further down is the bigger issue. To add, I noticed actually two links to "videos" on the SERPS pages, so for them to add these to "green widget" searches is very tacky. Hard to justify imo. I would be interested in their defense to a governmental watchdog if that type of insertion was ever questioned. It's like you walk into a restaurant and you order a soup. When the waiter comes back, he has the soup but also places a bowl of chili down. His response to your puzzlement is something like well I thought you might like the chili also. Afterall, you ordered a bowl of soup.