Practice management software sells capability: pipelines you could build, sequences you could configure, reports you could read. Every "could" is unpaid work assigned to the owner. The vendor's accountability ends at uptime; whether the firm grows is explicitly not its problem.
A management company sells the operated system. We pick the stack (often consolidating the three overlapping tools you already pay for), configure it, connect it to your accounting and marketing data, and then run it: the sequences actually send, the AR follow-up actually goes out, the dashboard actually updates, and a human team plus our own platform watches the whole thing. Configuration in, construction out; automation in, bodies out. And the fee is a percentage of collections, so the accountability lands on the number you actually care about.
The stack itself usually gets cheaper. Tool consolidation and an annual expense audit are inside the fee, and $10k to $20k of redundant subscriptions is a normal finding at firms our size.