Power is shifting to TV makers. Vizio's plan to take on Roku and Amazon.<p> </p><p>Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a></p>

The Christmas Supply Chain Race

Get the lowdown on high finance each week with Barron’s columnist Jack Hough. Business leaders and trendspotters, insights and absurdities—this is Wall Street like you've never heard before.