you literally get your commodity delivered in your front yard
Only in the movies.
What actually happens is you have an interest in the commodity stored in a warehouse (for which you must pay storage fees) assigned to you.
of which ~25% is allocated to alternative investments.
'Alternative investments' here includes investment in productive (or at least income-generating) assets such as private equity and real estate. If you just consider hedging and store-of-value assets such as gold, commodities, etc. it is much less than 25% but still significant. That's the segment where most if not all crypto fits.