Software is more than CRUD applications for business automation, but even for those, I'm not sure how accurate the characterisation here is, particularly regard

Software is more than CRUD applications for business automation, but even for those, I'm not sure how accurate the characterisation here is, particularly regarding external dependencies. SaaS/cloud/this-week's-buzzword has done well for a few very successful businesses, particularly the handful of giants providing the infrastructure it runs on, but outsourcing everything you can think of is hardly universal.