Jack Welch, the longtime CEO of General Electric in the late 20th century, preferred to target the No. 1 and No. 2 companies in an industry when seeking to buy businesses. He felt that approach was necessary to maximize profitability and market share.Now, this approach might have begun to play out for the No. 2 in the rideshare industry, Lyft (LYFT 1.46%). Both Lyft and the industry leader, Uber, saw their stocks crater after launching initial public offerings (IPOs). While Uber made an eventual comeback, L ...