Amusing, but a false comparison, since the economy can grow for ever and ever.
To avoid going into all the reasons, I'll just give one obvious example.
We are said to be in the information age where information is worth money and therefore contributes to the GDP (Gross Domestic Product). Patently information can grow continuously since new discoveries are unlikely ever to be limited within our vast universe, so for that reason alone the potential for GDP growth is effectively infinite.