Because that allows my saas to ask for higher price compared to value generated.
To put it in other way if my Saas provides value that is easy to measure it is most likely easier and more effective to monetize.
Why?
Because there is less opacity in the payoff, which means there is less risk for the buyer.
There is always some opacity due to the problems of induction, if the value in the specific case the saas is bought for is not achievable before the purchase within trial period.
And even if it would be seen in trial period, there is still the problem that can you generalize from the given sample. Yes there is statistics that can help you with this, but there is still the problem that is the sample representative.
This is why every transaction should have some multiple on the payoff compared to price. If the payoff is very opaque, 10x is a good proxy. If it is easily measurable and even provable with some sample in the specific case before the purchase, maybe even 1,5x can be enough.
If it is easily measurable but you need to make the call based on other customers of the saas, that might or might not be that similar to you, it is somewhere in between.