If the monopolist is huge enough, they control an enormous cascade of wealth transfer. There are many points for a small business to tap into one or more of th

If the monopolist is huge enough, they control an enormous cascade of wealth transfer. There are many points for a small business to tap into one or more of their streams in a way which everybody wins. But this usually requires that no disruption takes place. Without actually adding value (to natural resources) yourself, you are allowed to remove enough value to grow an operation having share price which can outperform the underlying monopoly. This is a common strategy with oil & chemical companies. They can also afford to not be a pain or make you wait until the end to be financially worth it.