Only if block sizes are limited. If they are unlimited even a tiny portion of the hashrate can continually clear the market at effectively no cost to themselves, thats the whole point of this post-- creating a cost for doing so.

Some useful thought fodder... Monero/Bytecoin/etc. do something like this, but they require the miner to throw away some of the coins they'd receive in their coinbase txn. The problem with that is that once subsidy is small the miners can simply bypass it by accepting fees "out of band" (e.g. with addition txouts). Difficulty scaling avoids that trap.