Not always. There's usually exemptions, not that I know how that applies here.

I used to (mid-2000s) work for a SaaS company whose main customers were municipalities and universities in the US. We always had NDAs on file for customers we did business with. It was SOP.

We weren't swindling them out of billions of dollars, though. It was something that had prices in the 30k-40k annually range.

I can certainly see room for exemptions. Like if your SaaS covers police investigations in progress and such, makes a lot of sense that they don't fork over anything with that or sensitive architecture information.

But general terms of a deal and etc.... that's just gotta be known.

I can't speak for Wisconsin, but the laws are usually riddled with exemptions. E.g. records sensitive to a 3rd party.