There's only hoops to jump through if you want higher send rates from a number. The CTIA figured out a new cash grab was registering businesses as legit senders on TFA's but it doesn't promise delivery, just gets you a nice logo/name on SMS apps.

Having been on the purchasing end for wholesale marketing SMS I can tell you most of sales people will suggest the 'correct' way and happily sell things that let you do it the 'wrong' way.