All ponies and other species have been enslaved and sold off at auction by the human race. Dash being the Element on Loyalty cost a fortune that only one of the richest billionaires could afford. said billionaire bought her a top of the line stallion as a companion... not just another pony to have company with, but as a top breed-able partner that would help yield the best foals that the owner in turn could sell for in the tens of millions each. Dash had it much easier than most ponies, and having a close friend be with her was one heck of a bonus despite Soarin having to knock her up once every year of so.