Oxide will eat Supermicro's lunch. There's no offering that Supermicro and other vendors can offer that comes close to what an integrated Oxide rack will provide.
I see oxide as a cloud in a rack, fairly hands off, whereas SuperMicro is a choose your own adventure book.
Personally, I want both companies to crush HPE and Dell.
https://www.supermicro.com/en/solutions/rack-integration
I could not find any info on that page about whether the level of software and network integration is anything like Oxide’s product though. SuperMicro claims they can build 5000 racks a month, so that’s a lot of lunch for Oxide to each potentially.