Relying on turnover sales and nothing else.
The best way to grow the economy is to develop spaceflight. If you fly to mars, there's millions of acres of free real estate waiting for you. Time to construct and grow the market.
There's no more meaningful growth on Earth possible, because the physical limits have been reached. This effect has been predicted as far back as in 1970 with the report: The Limits To Growth. We're finally seeing the effects of that now.