So what do you do when your customers say "this is great, when are you adding screen sharing"? Where do voice calls fit into this architecture, do we just add another UNIX util and stream the bits over SSH?

Furthermore, debugging may be "easier" insofar as the units are discrete (though any good modular architecture will have the same advantage), but what do you do when you find a bug? If you're running a business, you can't be in a place where you're just submitting it upstream and telling your customers that every single bug is waiting for a vendor fix. So now you have to take ownership of maintaining and repairing each and every UNIX utility you use. In what world is that easier than having 500k lines of Go in a consistent company style?

Joel Spolsky's advice is pertinent [0]:

> If it’s a core business function — do it yourself, no matter what.

https://www.joelonsoftware.com/2001/10/14/in-defense-of-not-...