Do you recall what mechanism Stablecoin uses to address rapid drops?  Is there a reserve built in?

As far as the price is concerned, Bitcoin's price is far from stable.  Viewed from the worst realistic case, someone who'd bought in at 1200 a few months ago has now lost almost half of their investment.  Most people have savings that cannot be exposed to this kind of risk.  In the marketplace, you offer as many alternatives as you can, and different people pursue different solutions and products.