Do you have general benchmarks for maximum connections on your server?
Tests were run against an AWS m5.large instance (2 CPUs with 8GB memory, 2GB allocated to java_heap). Scroll to the bottom for other hosting providers.
Publishing a 256kbps stream via RTMP, we were able to achieve the following while still maintaining the quality of stream:
WebRTC = 500 Subscribers
RTSP (Mobile) = 1,800 Subscribers
RTMP = 1,000 Subscribers
The same server type can support approximately 75-80, 480p RTMP publishers.