Given they mostly have business / law / academic backgrounds, I am not sure that anybody has ever put the case for fibre speeds to the Libs in terms other than 'this is what people want, and it is good.' The use cases used in Labor promotions were patronising to the extreme. Don't be surprised that they've concluded it is simply a 'nice thing' that people want but will loathe paying for.
To be honest with you, the things I am planning to do when I get a gigabit line are not exactly in the 'nation-building' category, either. I'm not sure how to fix that PR problem.
> Given they mostly have business / law / academic backgrounds
Lawyers or former law students are the most numerous profession in Parliament. Gillard was a lawyer. Abbott studied Law as an undergraduate, as did Howard and Hawke.
The professional training of a lawyer equips them to vigorously argue a case they may not themselves agree with, and to do so in forensic detail. The skillset and subject matter has a strong overlap with the work of politics.
That doesn't mean we couldn't do with some more professional diversity in Parliament and the Cabinet. It'd be nice to see some more scientists, engineers and the like on both sides of the chamber.
Turnbull is well aware that fibre is the right way to go. They were trying to wedge Labor by not allowing them to get credit for anything.
Labor was not able to communicate its vision or its successes. Rudd was brought I. Far too late to undo the damage. They are now in the wilderness for some time. Yet again.
Don't worry. Chances are they leave the actual writing of policies to powerful think tanks and lobby groups that understand that situation perfectly (and then cynically exploit it for maximum profit for whoever is backing them). All the politicians do is push the policy and sign it into law.