Will Shift4 eventually get a higher takeover offer?Shares of financial-technology (fintech) company Shift4 Payments (FOUR -4.76%) dropped 19.6% in March, according to data provided by S&P Global Market Intelligence. The company has been a rumored acquisition target. And for a brief moment, it looked like a deal would get done. But things fell apart in March, leading to the drop in stock price.On Feb. 28, Shift4 stock soared after a Reuters report said that Amadeus and Fiserv were in a bidding war. D.A. Davi ...