How many visitors can Editorx website host in a second?

As known, Launch, Boost and Scale E-commerce plans of Editorx provides unlimited bandwidth.

I am going to publish live events (through embeded video players, so most of the bandwidth will be on video player providers side) on a editorx website and I would like to learn will a editorx website be able to handle 5.000, 10.000 people at the same time for 4-5 hours long?

If I am not mistaken, hosting of editorx shared and will having that many people in a moment result in drops in the performance and loading speeds of website?

I would be glad if you can share your experiences on this topic.