[taxesareforever]

Being at the top of the chain today does not mean that more links will appear higher up tomorrow.

You are right there. Means you believe it can stop.

[Dimensio]

You are right there. Means you believe it can stop.

I misspoke. I meant to say "Being at the top of the chain today does not mean that more links will not appear higher up tomorrow."

It can stop, but only under two conditions. The first is if no significant selection pressures exist in the environment to encourage increased reproduction upon a specific variant of the population and that environment never changes. The second is if the population goes extinct.