I’m not sure they do. Restaurant owners make bad choices, start skimping on food, etc. all the time. The difference is that the customers notice and the restaurants go out of business. But political organizations “produce” nebulous goods which are difficult to value or sometimes even understand. So corrupt civil organizations can continue much longer and a practical business.
The ACLU going “corrupt” is arguably much better business for them since they can more effectively harvest donations from politically engaged partisans on the left - their fundraising has been supercharged since 2016. Right-wing partisans weren’t giving to them much anyway so more closely aligning with a side is all upside from a financial perspective.
