Often, freemium games like this are funded by a few whales. Like, 0.5% of the playing population pays 99% of the revenue. In another game I played, I knew a player was filthy rich (drove an Aston Martin) and spent several thousand dollars on a freemium game every month. Sounds crazy to me, but there are people out there who are filthy rich and can spend money like that. For my part, I’d sooner spend the cost of a Concavenator on an out-of-the-box console game, but folks can spend their money however they like.
Put it this way: Ludia wouldn’t make offers like this unless someone bought them. People generally don’t repeat unsuccessful behavior.