Blockchain - the beginning of 4th Industrial revolution leading to possible final global recession ..How??

Please upvote me if you like my forecast....

The blockchain smart contract shall cause serious disruption on the various service and manufacturing companies coupled with artificial intelligence , robotics and machine learning , Internet of Things... eating into service and manufacturing jobs..people will become jobless across the world ....so the first thing comes to my mind is the Say's Law

Say's Law is named after the 18th-century French classical liberal economist Jean-Baptiste Say.

What is the 'Say's Law Of Markets'

The Say's law of markets is an economic rule that says that production is the source of demand. According to Say's Law, when an individual produces a product or service, he or she gets paid for that work, and is then able to use that pay to demand other goods and services.

If the these futuristic technology are going produce goods and provide services ... who are going to buy these products when people have no job????? Then we all go back to ................