Not yet, because the cake is still growing. Wait until the cake has reached its peak size and starts shrinking (not for a short intermediate timeframe like 2017-2020, but for a timeframe long enough to consider it "the end game" for humans with finite lifespans) and see whether your assumption is still true then.

The problem will be that realizing that we're finally in the "cake-shrinking" phase will only be possible after watching it shrink for decades.