Help! Our cash reserves only went up $150,000 last year!

I love the way the IPA makes a call for membership/donations when there's an issue they think can motivate  the suckers  sympathising readers to part with their cash.

The reality is, as I'm sure I've pointed out before,  that the IPA already sits on a piggy bank of  cash that's been increasing substantially over the last 5 years.  Here, look at this page from their 2014/15 report:

Oh woe is them!  Cash reserves have only increased $1.14 million over the last 5 years. 

And for all of that, what did they get?   A Liberal PM who made promises directly to them that he didn't keep.    And even he's supporting the new PM in the superannuation changes the fight against which is supposed to be the rallying point for new membership.

If the IPA wants to run an advertising campaign supporting the ALP on this issue (lulz), why don't members (new or existing) tell them to use their growing cash reserves to cover it?