For years, social media apps have relied on eyeballs and clicks, but that no longer seems to be enough. Apps like YouTube, Pinterest, and Instagram are adding e-commerce features in a big push to implement online shopping. Could this be a way to make money after Apple's ad tracking privacy change? And will this change e-commerce and shopping forever? Claire Tassin, Retail & E-Commerce Analyst at Morning Consult, joins Closing Bell to discuss.