The trap of feature parity
Chasing feature parity with a bigger competitor is a way to lose slowly. You'll never catch up, and you stop being interesting along the way.
Sales says "prospects ask for X — the competitor has it." You build X. Repeat 50 times. Three years later, you've shipped a worse version of the competitor's product, you have no distinct identity, and the prospects still pick them anyway.
Parity is a losing race
The incumbent has more engineers, more revenue, and a head start. You will not catch up by playing their game. The only way you win is by playing a different one — solving a problem they ignore, or solving the same problem with a fundamentally different stance.
How to say no to parity asks
Ask what the prospect would be using the feature for. Often the underlying job is real but the feature isn't. Ship something that solves the job better than parity ever would. The deals you lose by saying no are usually deals you'd have lost in a year anyway.
Be different. Not better. Better is just losing slowly.