This isn't greed. It's not about making all the moneys. It's about Frontier doing a bunch of work and hoping to get a return on that work so that they can afford to do more work. Sure, they can keep adding free stuff to the game but the money they make from that work can only be via new sales, and eventually there'll come a point where they're adding stuff and making a net loss on it. I'd wager that the majority of the people who were on the fence about the game would by now have either given up on it, or bought it in a sale.
If you want them to keep evolving the game, there *has* to be a monetisation strategy beyond new sales, and that involves getting more money out of existing customers. There are a couple of ways of going about it:
- Expansions. We'd all like to see full expansions. However, these take time and resource and so Frontier would have to balance the cost of making an expansion against the likelihood that existing customers would buy it, and the likelihood that they would also bring in new business.
- DLCs. I think of these as mini-expansions, something akin to Lego sets. You can build up the number of pieces that you have available, and if you have the right bits you can make someone else's blueprint. If you don't have all the pieces you can still improvise, you'll just be making your X-Wing with bits of Ferraris, Hogwarts and the Houses of Parliament rather than the 'official' set.
I get the point about workshop fragmentation. However, I think there's enough creativity in the community that even if you filter out those blueprints containing DLC, there'll still be a vast amount to choose from.
If I know Frontier as well as I think I do, here's how I see the future of Planet Coaster: A semi-regular release of new assets / themes as DLCs. A semi-regular release of free updates to the base game. An announcement at the Expo of the first full expansion. Now, I may be completely off in my guess but that to me seems like a sensible and fair monetisation strategy.
[Note: I'm not privy to *any* information about what's coming in the future, so this is all my personal opinion.]