Why I'm not donating
Firstly, before I donate to something, I like to know what is going to be done with my money. The questions are vague. It's implied that economic modelling will be done, but not it's not specified what will be modelled and what techniques will be used. You could answer the question in any number of ways. It's like asking an essay question without specifying the word count.
Secondly, I can pretty well guess what the results will be, since I read international studies with similar goals around the time the NBN was first proposed. When you try to do a cost benefit analysis of broadband, the concrete benefits are small, and the far-future benefits are ill defined, so the error bars are large. There are inconvenient facts the study could point out, like the relationship between price and penetration and the effect of poor penetration on social benefits. But the ABS has had data on that since the NBN was proposed, so surely any political impact of such data has already run its course.
Thirdly, I'm pretty convinced that neither the broadband policy of Liberal nor Labor will lead to collapse and downfall of Australian society and industry. They differ in scale, not direction. The same cannot be said with such confidence about other causes that I might be willing to donate to.