The Never-Ending Job of Selling Design Systems
alistapart.com
alistapart.com
In the worst case you end up with designers over reaching and designing UI and UX for all sorts of speculative use cases. And then acting as gatekeepers for anything that falls outside of that. If you want to use an element the system doesn't include then you need to make a case that your design is valid for a whole host of use cases you don't care about.
The best design systems I've seen are trailing the rest of the design org, and document what is working rather than trying to skate ahead.
I also don't think they are ever worth the investment.
in my experience at least (in existing large companies) its easy to get buy-in but very hard to pull off properly, even when the ceo is behind it.
Like Google's Material Design or Ant Design etc.
Even at PlanGrid, when we were 450 people, we had our own design system.