And who's there to stop whoever buy these patents from abusing the patent pool in 4 years from now? In that situation, I would much rather have google own them

And who's there to stop whoever buy these patents from abusing the patent pool in 4 years from now? In that situation, I would much rather have google own them on the risk that they might do something evil with it (but probably not if we believe their history), than any of the other companies who already proved they would.