mgracen - 1:32 pm on May 9, 2011 (gmt 0)
Just my $.02
1) Based on the last few years of blatant white collar crime going almost unpunished, many managers, higher-ups, and CEOs are willing to roll the dice to move their mice. If buying $10k in links can move the needle several million in sales, they take the risk.
2) Many (arguably most, IMO) large companies have mediocre SEO knowledge at best. When their internal SEO teams can't cut the mustard, they turn to link buying, etc. to get the results they want.