Initially, there was a unique plan that included streaming and DVD rentals. The customers were able to select that plan just for $7.99 and if they wanted to rent DVDs at same time, just for $2 more they could do so. But now the strategy includes 2 new plans: A streaming plan for $7.99 and a DVD plan for another $7.99. As you can see, this represents 60% increase for the DVD rentals and clearly not an option for those who wanted to do it. This following image explains what I said before (Troll face apply to this case):
In conclusion, this is a direct hit to the physical formats and a move to the future. Netflix is not only focusing on the business itself but also on the current trends and future customers.