I personally do not believe the government has a right to do this.
One website´s purchase of faster speeds has nothing to do with any other website´s speed. All purchases are independent of each other.
Quality is not free.
Net Neutrality is like saying we should all get caviar for the same price as bread. It kills business´s freedom.
No, net neutrality is the idea that no web location should be prioritised or de-prioritised because all data on the Internet is equal. This has nothing to do with ISPs having to provide a certain quality of speed for a certain price. This has nothing to do with the government telling ISPs what they can and cannot charge. This has to do with ISPs not abusing their customers or businesses by denying them equal traffic to a website. There is absolutely nothing about that that is fair or trustworthy, and it should not be something that ISPs are allowed to do.
I don't really know what you mean by saying a website can purchase speed. That's not how the Internet works.
edit: don't misinterpret this as anger; the tone of this post is pretty intense but hopefully the thoughts still get across