Just from watching the tape I ponder whether using 10 degrees of flap and getting the wheels up asap might have made a VERY BIG difference...he stagged along for quite a while...had he had a little more lift and less drag???
Comments suggest hot and high may have been a factor too...did he lean for takeoff?
I also wonder why he didn't get the gear up, if I'm not mistaken the gear in Bonanza's and Barons cycles in about 4 seconds, correct?
I wonder if for some reason he ended up with the aux fuel pump on.
The elevation of that airport is 1286 ft with 4051 ft of runway available but California has had some pretty hot weather over the last week.
Interestingly that was the second crash at that airport that day. A kitfox crashed on takeoff in the early morning but the occupants were able to extract themselves from the wreckage.