Multi-Platform Streaming, what we should expect:
The streaming landscape is defined by a massive gap between Audience Destinations (the "Walled Gardens") and Technical Tools. A platform that bridges this gap natively would fundamentally disrupt the current power dynamic.
The Competitive Edge of the "Disrupter"
The hypothetical platform you described holds three critical advantages that current giants lack:
Unified Chat & Q&A: Currently, multi-streamers deal with "split audiences." A unified system allows a viewer on YouTube to see and interact with a viewer on Twitch in real-time, creating a single global community.
Built-in Distribution: Unlike Restream or Streamlabs, which act as a middleman, this platform would use its own infrastructure to push the feed to all targets simultaneously, removing the technical burden from the creator's local internet.
Instant Critical Mass: By leveraging an existing user base of millions, the platform bypasses the "empty room" problem that kills most new streaming sites.