Are you arguing that most good writers from history were poor? This is after all the only "horrible experience" a subsidy would alleviate. I don't think that's actually supported by evidence, most great writers I can think of were relatively extremely sheltered (although they often were sensitive to the horrible experiences of others)
I think the argument is a) most writers have to do a lot of writing to achieve writing consumable/appreciated but sufficient to be considered successful, b) most great writers had to go through some shit in life to incorporate that in their writing to make it interesting in order to be successful.
