The big mills, Weyco, SP, Hampton, pretty much all own their own ground, and therefore are moving to shorter and shorter growth cycles.
They can make boards out of a 22" log and make it profitable, since most everything is automated now.
I'm lucky enough to have a couple mills near here that will still take upwards of a 9', though one closed for good recently.
Part of the ding for oversize is they know that you are getting massive volume out of it... so yer going to be ok with getting hosed a little bit, that and most of the oversize stuff anymore isn't exactly real pretty wood, lots of sap rings, ugly growths, rot, various forms of damage. Pretty scarce to trip into a bunch of nice fat timber, most of it was cut in the early 90's after the spotted own ****ed everything up, anything left is on FS land and is no touchy.