Single-Player
One user gets the full value alone. Collaboration is decoration, not structure.
Multiplayer
Workflow degrades without multiple participants. Value comes from density.
Pricing Mismatch
Per-seat pricing on a single-player product inflates expectations.
PLG Mismatch
Team-based growth motion fails when one user can't pull others in.
Retention Source
Single-player retains on habit and data. Multiplayer retains on density.
Fake Multiplayer
Adding comments and sharing doesn't change the topology.