Seems reasonable enough depending on your use case.
In our situation we store our own (private, commercial) artifacts as well as third party ones, so we already need to have a server, and we know our server is configured, maintained & monitored in a secure fashion whereas I have no guarantees with public servers.
Plus our build servers don’t have access out to the internet either, for security. Supply chain attacks like SolarWinds and Kaseya are too common these days.
Edit: Also, our local servers are faster at serving requests, allowing for faster builds, and ensures no issues with broken builds if a public repo went offline or was under attack.
In our situation we store our own (private, commercial) artifacts as well as third party ones, so we already need to have a server, and we know our server is configured, maintained & monitored in a secure fashion whereas I have no guarantees with public servers.
Plus our build servers don’t have access out to the internet either, for security. Supply chain attacks like SolarWinds and Kaseya are too common these days.
Edit: Also, our local servers are faster at serving requests, allowing for faster builds, and ensures no issues with broken builds if a public repo went offline or was under attack.