It is only Circle's own problem not to allow their customers buying and selling Bitcoin, it is not Bitcoin's problem. It just means that Circle is not going to succeed. Other companies will find ways to take over Circle's current service.
That is true, someone else will take their place and make money instead of them. Circle has made wrong business decision.
But Bitcoin is and will remain digital currency so I can't actualy see the point of this article. And Bitcoin already is future.
In future even the fiat currencies are going to change in to digital currencies, as some countries are taking serious action to launch their own digital currency because of the increasing demand of online trading and shopping etc.
I think bitcoin is really becoming more stronger than its previous position and hope that in future it will remain the world number one digital currency.