Comment by whoisninja9

none, their goal is to optimize profits. They haven't gotten to a point where investing in cutting edge tech only research is seen by them as a value add. Also for such projects they stay away from open source collaboration with outside world - so that would be really slow to develop something useful. Hope that will change in future.(very few exceptions - as someone commented pandas - pandas creator at two sigma actually is pushing for open-source, i think it is great but i hope it is not just a gimmick to attract better talent).