Well, if you count it in that way, that might be the end of bitcoin. But the idea of bitcoin is exemplary, it won't be diminished that easily. Many will come by the time you've predicted.
I agree with this, people will definitely create various modifications to keep Bitcoin running in the market. And given that Bitcoin is being use by the mass, we can say that the stability must always be observe so we can prevent future threat that may end up eradicating this community.