OVH is a more complete offering it’s offers three custody ,...

OVH is a more complete offering it’s offers three custody , admin, registry , trustee services in addition to an investment platform for advisers. It becomes a compelling service where you can onsell any of the other services once you have sold one.
PPS mainly deals with separately managed accounts on a platform
Hub and recently netwealth - main big players in the smaller spaces. They platforms where advisers can invest their clients money and manage their portfolios- they earn a% from their own managed funds offered and from admin / transaction fees charged on funds under management . However these two platform are significantly more popular than OVH. Last these two accounted for 53% of all total
Inflows onto platforms and these is when they are competing against the likes of amp, BT, cba, Nab etc. hope that helps