As Sheather says, investing may not necessarily be a complex task but the admin can really catch people out.
(And if investing is as easy as translating an asset allocation into a bunch of ETFs plus a few direct shares, a machine could, and can, do that too - why pay a human?)
Investors could really benefit from a piece of software that enabled them to knock out an asset allocation strategy, buy whatever investments they wanted cheaply, reported back, worked out the tax...
In New Zealand platforms have captured a decent share of the adviser market. Last time I looked, the ASB-owned Aegis had about $3 billion 'under administration' and its main rival, FNZ, looked after a similar amount.
No doubt, it's a lot more than that now. But it can't be that lucrative a business here. ASB tried to offload Aegis a couple of years ago but eventually gave up due to lack of interest.
FNZ, however, has been quite a successful export story for New Zealand. Although the business is now mainly owned by offshore interests (some Euro hedge fund or private equity mob, I recall) the FNZ platform technology is behind several of the UK platforms.
Latterly, FNZ has also been making inroads into the Australian market, scoring a big contract - along with investment firm UBS - with the country's largest industry superannuation fund, AustralianSuper with more considerable deals to come.