Let's see, California SIE's involvement on Japanese/Asian production (and European for that matter) is, at most, trivial.
Every regional branch (America, Europe, Japan/Asia) has its own set of producers that do the heavy lifting regarding game production.
The biggest American influence you will get to see if From gets acquired is Scott Rodhe handling global internal production, and you know? He wasn't even involved in Concord; that was by head of global external production, John Rostron (a British man), who also oversaw Stellar Blade, which I think proves enough that their involvement doesn't really change much in the grand scheme of things.
Sorry, but this Sony California that's going to destroy your games is nothing more than a boogeyman.