"To eliminate straws, Starbucks is transitioning from the flat, plastic lids that require them, to ones that feature a raised lip you can drink from. The new designs have drawn comparisons to an adult 'sippy cup.'"
I've used these. They work fine for me. Besides, it's a private business and can do whatever they want - I really don't care. If it succeeds it succeeds; if not, it doesn't.
https://www.google.com/search?q=starbucks+stock&ie=utf-8&oe=utf-8&client=firefox-b-1
click on the 1 year chart...............