Supply and demand curves don't follow closely with most, if any, markets. Agriculture and some commodity markets follow the models but the rest don't. You literally couldn't model your restaurant's business finances on the basis of micro-economic models.
Even models regarding scales of economy don't fit any firm anywhere on the planet. Firms that produce electronics don't bother with such models and theoretically overshoot scales of economy all the time but make up for it by the fact they can sell their electronics at a price that offsets their costs (i.e. they set the price for the revenue they want, not what the market will bear).
Even models regarding scales of economy don't fit any firm anywhere on the planet. Firms that produce electronics don't bother with such models and theoretically overshoot scales of economy all the time but make up for it by the fact they can sell their electronics at a price that offsets their costs (i.e. they set the price for the revenue they want, not what the market will bear).