Trust me, we have. Some are viable commercial concerns, but many are just well meaning amateurs. In all cases, the NFL product is far, far more desirable to the viewing public, as well as highly polished in its marketing.
The NFL is dominant in the US. From a business perspective, of course they continue to explore growing their business in other territories.
As fans, of course we don't want that. But fans are effectively powerless stakeholders in all of this.