Lawyers have the ability to create their own demand.

When lawyers sue, they create a demand for more lawyers.

Manufacturing has some ability to create demand which is why there is more stuff manufactured today then there was at the start of the industrial revolution.

BTW: The US and Europe is experiencing the effects of outsourcing. When we started outsourcing our primary manufacturers we saw a collapse of all the companies that supported the manufacturers.

China has been expanding its manufacturing sector. They had been seeing the exponential growth in manufacturing.

The same concept applies to the internet. There was no demand for internet 30 years ago. The creation of the technology created a huge demand for internet related things.