Buffet is a value investor, who can choose to take his profits and pay his taxes on them whenever he pleases. His behavior particularly lately with banks has been embarrassing. (1. invest in a flailing bank. 2. use money and power to get government to bail out flailing bank. 3. profit).
If Buffet wants to pay more, let him pay what he already owes and then send in a check for the difference of what he thinks he should have paid. then i'll buy it.