This reads more like a pitch for open-source than anything else.

> Switching out something, even if it's open source and self-hosted, means that you're rewriting a lot of code.

The point of something open-source and self-hosted is that it resolves nearly all of the "taxes" mentioned in the article. What the article refers to as the discovery, sign-up, integration, and local development tax are all easily solved by a good open-source local development story.

The "production tax" (is tax the right word?) can be resolved by contributions or a good plugin/module ecosystem.