If the world is on a bitcoin standard and you are a nocoiner pleb, you'll still be using bitcoin backed services and benefitting from deflationary money.  Therefore it would be common sense to run a node if you can, to help further decentralise the network and thereby contribute to a fairer society. 

 If you can't afford a utxo, you can't afford to run a full node 

 When a spendable UTXO is worth $1M (in today’s dollars) and a node costs $200 (in today’s dollars)? 

 It will never get to that. If the ratio of spendable utxo value to node cost gets too high, the pressure to fork to larger blocks and decentralize the network would be enormous.
 

 Well that’s undoubtedly where it’s headed without a sly roundabout fix. 

 The pressure will incentivise a solution. Actually, maybe it would make every node a miner again. If a tx fee is $500k, and running a full node is $200, it might make sense to spend $500k on mining to subsidise your own fees. 

 It used to help the network in 2009 when it was difficult to find a bootstrap node, but that isn't a problem today.