Read early versions of the Ripple white paper, before they decided to make XRP a store of value. The compulsion to cash in on a settlement layer by establishing your own scarce medium of exchange is too great.
Just to be pedantic, what happened is the original founder sold it to some skeezy guys who wanted to cash in on the digital currency crazy, and those skeezy guys added XRP as a way to cash in.
So it's not quite that the original founder felt pressure to create the token, but he did feel some pressure to make money, and eventually that led to a token.
