[Principled]

It's increased market share [and the same profit margin] that leads to growing profits

The context was keeping the profit margin the same - but you always are the one who takes things out of context.

[Your Nightmare]

The context was keeping the profit margin the same - but you always are the one who takes things out of context.

If all businesses are reducing their prices and keeping the same profit margin, how is one particular business suppose to increase their market share? Suppose the company doesn't have profits (some companies actually lose money, ya know)? Hint: market share does not equal profits.

You really should pick up a basic economics textbook (all FTKs need to). Here's a recommendation.