As a rule, you don’t any own software. You pay to have the right to use it, not to own it. Software is licensed and not sold.
That is not entirely firmly established depending on what state you're in or what court you're under. Some states classify software as a sold good, thus falling under the Uniform Commercial Code, which enforces your rights that software publishers often try to take away through license terms.
This attempt at claiming rights not granted by copyright is common. In fact, there is currently an FTC complaint against several content owners, accusing them of making overreaching copyright claims. A new term is coming into use to describe those who try to overstep their copyrights, "Copyfraud."
Of course I don’t “own” the software in the sense of being able to package it as my own product and resell it. I also understand the convoluted legalese that has been developed to take ownership out of ownership by software and media companies. Do I care about it? No. It doesn’t affect how I use what I buy from them.
I think that we have gotten too far away from simple definitions of ownership with the only cost being to the consumer. Software should be looked at as no different than buying any other infinitely reproducible product whether it be spark plugs or video games it should not be seen differently. The makers of spark plugs do not sue hobbyists who use their plugs in ways not intended.
I think we are in need of laws defining consumer rights more clearly. It seems that Corporations are pushing harder and harder to control their consumers just as government is pushing harder and harder to control the citizen rather than respond to them as the source of their income and power and due of respect. The paragons of capitalism seem to have nearly as much disdain for it as those hate it. They no more desire open competition than incumbent bureaucrats.
My solution is I usually don’t buy things from proprietary companies with limited markets. Why do I want a music player that the company wants to control where I get my music from?
Why do I want a cell phone that only works with one service provider? Why would I want a computer that I can get my parts from only one company? I don’t and if the companies that made such products who waste their efforts trying to control their consumer would simply invest all that wasted time in making it easy and desirable for consumers to buy their products and services then they would have nothing fear from their competition.
Don’t get me wrong I totally support the rights of companies to protect their copyrights and patents. I just believe in strong fair use and open use of products by the consumers who buy them.