I don't understand what you mean. Why does ARM hardware become obsolete after a few years? Lacking ongoing software support and no mainline Linux?
What does that have to do with the instruction set license? If you think RISC-V implementors who actually make the damn chips won't ship locked hardware that only run signed and encrypted binary blobs, you are in for a disappointing ride.
Major adopters, like WD and Nvidia didn't pick RISC-V over arm for our freedoms. They were testing the waters to see if they could stop paying the ARM tax. All the other stuff will stay the same.