Recent market volatility highlights the global economy's reliance on tech stocks. Despite potential corrections, major tech companies are expected to maintain their market power due to established anti-competitive practices.

<p>Recent stock-market gyrations are a reminder of just how dependent the United States and global economies have become on investors’ seemingly insatiable appetite for tech stocks. Even if a major correction is in the offing, however, it will not happen before SpaceX’s massive initial public offering draws in yet more leveraged investment, nor will it destroy the market power of the other tech giants that have spent years perfecting anti-competitive tactics that largely escape regulators’ purvi...