This is possible, due to using spare capacity of people’s devices if demand isn’t massive.
Though I’m hoping that demand for the Safe network is sufficient to push the market beyond what spare resources of willing farmers can deliver, up to equilibrium where it’s profitable for farmers to keep increasing capacity at a steady rate equalling the growth of the network’s usage (data usage goes up over time).
We’ll have to see what happens, but if the network catches on for all kinds of uses, including as a back end for apps, cloud storage service, web & digital media hosting service etc etc etc, I think spare resources will become exhausted & dedicated / purposed devices will take up the slack & be able to break even, leading to a very stable market.
Edit: here’s a comment from another thread that agrees with your view: MaidSafeCoin (MAID) - Price & Trading topic (Part 1) - #5049 by wydileie?