This strikes me as being worried about the same thing, especially in a market ripe enough for you to have real competition. Presumably, in trying to best your competition, you and/or they -- hopefully both if both are paying some attention to the other -- will ultimately approach a product the customer wants. Otherwise, you're both dead anyway. Past that, it's up to whoever has the better product.
The only other thresholds to overcome is that you or your competition solve enough of the customer's problem for them to be interested at all, and that the price is something the customer would be willing to pay. Odds are, if you are tooth-and-nail with one or more competitors, you'll pass both those thresholds just trying to keep ahead of them.
There might be very niche markets were you won't have the threat of competition to keep you honest about product quality, but I can't imagine of any. I'd worry about any market where no one cares enough to make a competing product.
The only other thresholds to overcome is that you or your competition solve enough of the customer's problem for them to be interested at all, and that the price is something the customer would be willing to pay. Odds are, if you are tooth-and-nail with one or more competitors, you'll pass both those thresholds just trying to keep ahead of them.
There might be very niche markets were you won't have the threat of competition to keep you honest about product quality, but I can't imagine of any. I'd worry about any market where no one cares enough to make a competing product.