Not sure why you believe float is over-rated. Buffet himself has said that a $1 in float is equal to a $1 of value. BH's market cap is about $300 BN & their float is about $90BN which means Buffett considers the float to be about ~25-33% of the total value of BH.
Another measure of Mr. Buffett’s firepower: Berkshire Hathaway’s insurance float, paid in premiums that can be invested until claims have to be paid. Float was about $89 billion on March 31 2016, compared to about $88 billion at the end of 2015.http://blogs.wsj.com/cfo/2016/05/09/at-berkshire-hathaway-ca...
Another measure of Mr. Buffett’s firepower: Berkshire Hathaway’s insurance float, paid in premiums that can be invested until claims have to be paid. Float was about $89 billion on March 31 2016, compared to about $88 billion at the end of 2015. http://blogs.wsj.com/cfo/2016/05/09/at-berkshire-hathaway-ca...