Elendel has already started to monetize the Metallic Arts. We have examples of Coinshots being used as high-speed couriers, Thugs functioning as muscle (and I'm sure as a welcome addition to the constabulary), and Soothing parlors. Once nicrosil enters into their consideration, you can bet it will lead to for-sale metalminds. Of course even regular Ferrings can use their abilities for money. I believe it was mentioned in SoS or BoM that Archivists make excellent clerks, Sentries could make excellent... well... sentries.
In fact, that's one of the things I'm looking forward to most about Eras 2 and 3, seeing how this magic is used to interact with regular technological development. In our world, we have protein bars for hikers and for soldiers to take with them into the field. They'll have caloric metalminds instead. Heck, a modern-style military outfitted with a recycle-able system of metalminds would make for incredibly adept small units, able to function in all environments and with incredible effectiveness.
Especially considering that as the population grows, so will the stock of Compounders who can create these things wholesale. And if hemalurgy enters into the common knowledge, they could probably sell their abilities on their deathbeds for handsome sums to be paid to their dependents, which can then be used to create corporate Compounders.
Hmm. Your Olympics idea makes me wonder... would a chromium Misting be able to wipe the feruchemical charges from a metalmind?