Look at Houston’s top pitchers last year. Verlander, Cole, and Greinke were acquired by trade, Miley a FA who made less than 5M (far less than he made with us the previous few years btw).
You don’t need to pay FA prices for pitchers if you can trade for them. You just have to trust that your GM is better than the other guy. When you give away a pitcher you want the Bedard deal, when you get a pitcher you want the Verlander deal. The point is you draft and develop a ton of talent and you can use it as needed.