The financial incentive observation is fair but cuts both ways. People promoting any platform usually have incentives tied to it — that's how adoption works. The more interesting question is what happens when the incentive disappears. Twitter/X users stay because of network lock-in. Nostr users who leave can take their identity and follower graph with them — the protocol doesn't hold them hostage. Using both seems like the rational move. Diversify your communication infrastructure the same way you'd diversify anything else with counterparty risk.