Transmutation yields from other processes are actually high enough for commercialization, just not for gold. One example is the moly cow, like these:
99-molybdenum is produced by transmutation of uranium in nuclear reactors under neutron bombardment, and then shipped to hospitals in in "moly cows." You don't actually use the molybdenum itself, though. A moly cow is actually a technicium generator! In the cow, 99-Mo gradually transmutes into 99m-technicium (which, notably, has a higher atomic number) through beta decay.
99m-Tc has such a short half-life that it can't be shipped on its own, but 99-Mo lasts days. So, over the course of about a week, 99m-Tc is "milked" from the moly cow and injected into patients for medical imaging, to detect tumors and soft-tissue stuff that's hard to see with other methods.
This is a very common, routine use of transmutation, 20 million 99m-Tc scans are performed per year!