There is a huge demand for shows and not enough experienced writers to fill the demand. For fantasy in particular, GOT finishing created a power vacuum for the next big fantasy show. Because studios were worried that someone else would beat them to the punch, they rushed production and gave the show to writers who didn’t have the experience to manage projects of that size. The streaming model also doesn’t reward quality as much as quantity (compared to other models)

This is probably the best argument for term limits. If politicians weren’t constantly worried about reelection they would be focused on their legacy by starting something great that would last for decades that they could put their name on it. Instead a successful politicians legacy is now getting re-elected for 40 years and dying in office after spending at least 30 of those years being terrified to upset the status quo.