True. It is all speculation on my part. Personality disorders commonly originate in a person's youth or as an early adult. That is partially what I base my assumption upon.
Jones purchased the franchise at age 46. He is 77 now. He has exhibited the exact same personality traits throughout that span. I severely doubt Jones spontaneously manifested a particular personality, of which 99.99% of the people inside and outside of the metroplex have observed during the same timeframe, in his mid-forties, radically opposite from that which he had exhibited in relative obscurity before buying the Dallas Cowboys. Logically, however, anything is possible without further concrete fact.