Earlier quoted context omitted.
Unless they are colluding that's not how a free market works. If supply is truly plentiful, someone will be willing cut prices to gain sales. Others will then have to follow or watch their customers disappear.
Doesn't that assume that you can scale relatively quickly? Otherwise the effect can stay marginal.
You do take a small productivity hit, so it isn't all smooth. Still there is plenty of opportunity to expand to meet demand.