If you can spare somebody from downloading the blockchain for weeks, I can imagine that there are people who give you 150$ for it. In four years.
I really think that could work.
there's currently zero incentive to run a node. who's gonna pay dollars for a hard disk containing the blockchain on top of that? i guess there might be a tiny hard core but other than that people are gonna say 'screw it' and let someone else deal with it. that's how it is with a manageable size right now. when it gets really big it's not likely to improve.