I can rent a Uhaul trailer a LOT of times with what a trailer costs. I don't doubt its versatility, but most people, including me, would not use one enough to justify it. I bought three games 700 miles away. 3 day rental on a Uhaul tandem axel was 100 bones. Done. Just another perspective. I live in a subdivision that doesn't allow them, so with storage, I could not justify the cost.
For those of you that do this as your business or a good sized side gig, and/or travel the country regularly, I completely understand.