I grow two kinds of brambles (Southern Dewberry & Sawtooth Blackberry respectively).

Though I don't consider the Dewberries truly wild anymore after 15 years. They seem to have adapted to my backyard over many generations of reseeding (I make it a point to put plenty of the seeds back into the ground). They grow at an almost relaxed pace now (above ground that is. Below the soil, they've lost none of their will to spread), spoiled on fresh soil and constant watering. Even their spines aren't nearly as sharp as they were before.

More likely these "adaptions" (at least predominately) are just them getting cross-pollinated by domestic blackberries from nearby yards, and my own selection bias when picking berries to reseed.