Sure, but Netflix uses HLS, I assume, and doesn't have segments that are 15 minutes in length. So if you did drop a tcp packet, you're more likely to have lower quality for 10-20 seconds, not 15 minutes.
Sure, if you wanna pay the DASH tax to a hundred patent holders. DASH doesn't even really hold much of a technological benefit anymore now that their's finally a standard for HLS-LL.