There is no need to artificially limit the growing, the economics will work better.
See
So, there would be only long running nodes and they mostly will be run by Operators who doesn’t concerned regarding covering bills, because if you heard us - you will use the HW which will be online anyway, with Storj or without, so all costs already covered and any earnings will be a pure profit.
Of course you can take a risk to invest in HW, but there is no guarantee to cover your bills, since the service is used by real people and thus there is no predictable income.