No, for two reasons.
- There are typically two kinds of components to set up: simple ones that take 5 minutes, and complex ones that are unique to the project. So a reusable set only buys you an hour or so on the first type and is not applicable to the second type.
- You lose the entire drag and drop page construction that frees your marketing team to pump out pages without back end help. SXA pays for itself on that alone in about 2 months.