It will be interesting to see what will be considered “commercial”.
At the moment some folks plan to buy a semi-dedicated home minifarm.
We don’t consider that to be pro-farming, but if enough users do it, it may turn to be untenable in terms of ROI, in which case using spare capacity on existing hardware (i.e. essentially zero cost farming) may turn out to be the only non money-losing approach.
In post below I claimed that even RAID-ed setups will not be viable if dedicated to SAFE. Because of that I’ve always claimed that questions about “best” RAID level are moot. The best level will be no RAID and I believe discussions related to RAID will have been a waste of time.