How is ordering Grubhub a drain on productivity?? Most tech companies don't have free food (e.g. Apple), so I doubt that's an important aspect here.
Analogously it would like if Apple upped in office time to 80 hours or whatever, and then closed those cafeterias.
And FWIW George has good food at his own company because he personally values it.
Also, my point in using Apple as a reference was that they do have a crunch culture (occasional 80-hour workweeks), and those cafeterias aren't open all day (unlike the Twitter ones).