How does anyone max out their Enhancements?

I have noticed a ton of people at the top with entire teams of max enhanced Dino’s. I’ve been playing since 2018 and have 3 Dino’s with two or more enhancements. Just to get enhancement level 4 for Dilo it would be $1300 for the silver catalysts alone. I dart everything I see and always have and even though I use all my surplus 25+ dinos I cannot imagine how much DNA it would take to get that many silvers. How the hell does anyone get enough to max enhance entire teams?