Why does this not surprise:

HOUSTON, May 29 (Reuters) - BP Plc (BP.L) (BP.N) gave up on its failed "top kill" effort to smother a Gulf of Mexico oil leak on Saturday and focused on a plan to cap a piece of equipment at the wellhead and corral spewing oil and gas.

"We do think it will capture the majority of the oil if it works. We can't guarantee that," BP Chief Operating Officer Doug Suttles said of the next step at a daily briefing on Saturday with the U.S. Coast Guard. He said it could take four days or longer to show results.