I don't think Netflix qualifies as in-house programming. IMO, when Joel refers to in-house programming, he refers to companies that have a core competency that

I don't think Netflix qualifies as in-house programming. IMO, when Joel refers to in-house programming, he refers to companies that have a core competency that has nothing to do with software. If you work at an insurance company or tech support company, you'll be writing code to make lives easier for people who work at the company. Your customers are in-house employees.