How many marketable black people are there in the PGA?
Why does TAG Heuer, Gillette, Cadillac or Accenture need a black golfer as a spokesperson? Tiger's not likely to lose his Nike sponsorship, but there are lot of others that are likely to be on shaky ground.
You're obviously not paying attention.
A quick google search for "Kobe ads" gave me more than three different American ads with big companies like Nike and Vitamin Water
A sponsorship doesn't count for much if there aren't any ads to go along with it.
People stopped caring too much about infidelity after the Clinton years. It just isn't that big a deal anymore (at least outside the beginning gossip phase).
There's a difference between having an affair and cheating on your spouse with over a dozen partners.
EDIT: OH HAY, LOOK AT THIS
As a result of his infidelity, Woods' U.S. popularity has plummeted according to a USA Today/Gallup poll taken in December 2009. The poll found that his "favorable" rating fell to 33 percent in December from 85 percent in June 2005, and 88 percent in 2000, and his "unfavorable" rating climbed to 57 percent in December from 8 percent in 2005.
Source.Granted, this is public over-reaction, and the after things calm down his image will improve, but it will never return to where it once was. Once you lose the respect of the public at large it's not easy to get it back.