The standard explanation for asset management consolidation is fee compression — smaller managers can't compete on cost, so they combine. This is true as far as it goes, and it misses a more immediate driver I see repeatedly in practice: unresolved client-relationship ownership inside firms that have already merged once or twice before.
A firm that's acquired twice in a decade frequently has three or four different views, held by different legacy teams, of who actually owns a given client relationship when reporting lines cross. This ambiguity doesn't show up in the investment performance numbers. It shows up in client service — slow responses, contradictory information from different contacts — which erodes the relationships the merger was supposed to be protecting.
The firms that consolidate well treat this as the first integration priority, ahead of investment process alignment, because client-facing ambiguity is the fastest way to lose the assets the deal was designed to retain. The firms that consolidate badly focus on investment process first, because it's the more prestigious, more visible integration work — and let client relationship ownership sort itself out informally.
It rarely sorts itself out well. Informal resolution tends to default to whichever legacy team is more assertive, not whichever team the client actually has the stronger relationship with, and clients notice the difference even when they can't articulate it precisely.
If there's one diagnostic question worth asking before any asset management merger closes, it's this: for our largest shared clients, can we name, today, exactly who owns that relationship post-merger? If the honest answer is unclear, that's the integration risk that actually matters — not the one getting the most attention in the deal room.