I have had a theory for a while that economic growth or the economy in terms of CAGR will go to 0% or becomes linear with population as the population grows. This in my mind aligns with the opportunities for lifestyle improvements going to 0 (we already have the internet, we already have food, shelter etc.) so this is no new market to cover/no new businesses to invent?

Has this topic been discussed or debated anywhere? Has anyone with this same theory done any mathematical projections?