Failures in adopting green technology under perfect pollution pricing and monopoly

One result from this literature is that markets characterized by imperfect competition may not adopt less-polluting production processes - green technology - even when the green technology confers net benefits on society. I present a simple argument to illustrate how a basic monopoly will continue to use a dirty production technology in the presence of a known superior green technology, even when subject to a perfectly internalizing pollution tax, without appealing to further technological or informational market failures.