I see no argument here made about hosted services like Repl.it that doesn't also apply to a simple ol' terminal emulator, or other forms of development environm

I see no argument here made about hosted services like Repl.it that doesn't also apply to a simple ol' terminal emulator, or other forms of development environments. I feel like the real topic here is that there are effective developer environments on the web which can be accessed regardless of walled garden app stores. I'm trepidatious however, since I'm not a huge fan on relying on external services in general. "I can't code because the server's down" doesn't seem acceptable to me. There is a very real problem with mobile development environments though, a solution I'd like to see start with the phone manufacturers.