I think the big difference is distribution vs consumption. Where I live, there are additional clauses in law, for mass reproduction and selling. But republish

I think the big difference is distribution vs consumption. Where I live, there are additional clauses in law, for mass reproduction and selling. But republishing any work as your own, probably falls into that category. And it isn't about profit, but commercial use; thus pasting onto a blog to improve your business (rankings, hit count) is a business use case.