A mega deal would certainly create many billionaires, but it may also have some downside. The merger of a large company with another leading player may lead to lay-offs. It also takes a long time to integrate the operation of two companies, therefore, the company growth trajectory may slow down. It takes a long time for a whale to digest after it swallows an elephant. The tech bubble has affected many potential companies, and the whole tech sector has also slowed.
The market becomes excited when there are more and more mega deals. A correction is unavoidable whenever there is an unexpected event, for example, a US a war with terrorists. The market would see a domino effect. History tells us the market hype may not sustain for long.
http://www.ejinsight.com/20171116-market-bubble-may-burst-…/
