I started a company doing email delivery 2 years before Sendgrid. Sendgrid appeared and raised tons of funding (we were based in France so it was not possible to raise money at that time).

I got really really scared. Fast forward, 2 years after:

- product becomes cheaper - product becomes more reliable - we were making tons of money - we had more customers

I studied microeconomic a little bit after this and this is exactly what they predict.

TL;DR; it's probably poor form but all participants of your market will be better out of it.