(ASAP 6HRS ) Stripe Online Payment

Stripe gained their market position by filling a need, not unlike most other businesses. In your opinion, what sets the company apart in that they are able to stay viable despite the fact that PayPal, Apple, and Google Pay could all easily do business in that market sector and render their business obsolete? 

What commonalities are you seeing with Stripe and the posts of others as it relates to the long-term success of a business?