In the wake of that, it is unsurprising that Paramount chose to publish rules governing fan films.
What is slightly more surprising is that the rules they published also explicitly banned Star Trek New Voyages / Continues, etc.
It isn't *that* surprising, Paramount wanted to make money and New Voyages / Continues were both good enough that they could be seen as viable competition to the things they were producing,.
And it would have been difficult to write rules that excluded Axanar that didn't also exclude NV/Continues, but they didn't even try.
They used Axanar as an excuse to axe all fan films.