Mark David Entertainment industry veteran, budding sports entrepreneur and civil rights attorney Jeff Kwatinetz, co-founder of the three-on-three basketball league Big3, which he formed in 2017 with actor-musician Ice Cube, has put a $4.8 million price tag on a spacious home along the picturesque canals in L.A.’s once gritty, now fashionable and exceedingly expensive beach community of Venice.