That makes a lot of sense.
This is actually one of the reasons I’m looking more closely at the bearing choice for our next wheel builds.
If the goal is long term reliability rather than marginal gains, it sounds like a high quality steel bearing with good sealing may be the more sensible choice for a bicycle hub.
I’m curious what others think though, especially people who have put 10000+ km on their hubs. For those riders, what has actually failed first over the long term: the bearings, freehub, spoke hole or something else?
I’d rather optimize the wheelset around the part that actually limits its service life than spend money on something that only looks better on a spec sheet.
As someone, who really mistreats his off-road wheelsets, high pressure washing, bumps etc. Classic CX riding, honestly depending on the use case, normally the bearings rust faster than anyother things. Never had problems with spoke holes, freehubs etc.
It's always the bearing that makes problems like rough running first.
My recommendation would be, stainless steel bearings for road use, off-road hubs normal bearings as with the rougher terrain it's always more likely that they degrade faster than their road counterparts, no need for the stainless steel there.
Important in hub design to me would be that it's easy to replace all bearings, front hub normally is quite easy, rear hub bearings normally easy as well, but sometimes, the freehub bearings are a pain in the ass. (Newmen Fade Freehub, for example is absolute pain, as you've got to get the inner bearing through where the outer bearing sits..)
So my conclussion, easy serviceability should be priority number one, prio #2 hub design with bearings as big as reasonable, helps to have them live longer (esp. offroad), prio #3 the bearings you're choosing.
Cause if you mess up with prio #1 or #2, the customer is annoyed either with how long the service takes time or that they have to do it every 6 months. Normally not much people really care about the brand of the bearings. Also ofc ceramic bearings sounds nice on the spec sheet, but in my eyes people profit more if you put in a solid steel bearing they don't have to look at even once in the lifetime of the wheelset