How is DRM not designed to ensure the above by restricting the ownership of a digital product to the original purchaser?
Once the software has been purchased from the business, it cannot be considered to belong to the business.
Except software is intangible. You can't buy it. You can't hold it. So how can it be purchased?
If you buy a laptop, should you be restricted from selling it to a friend when you no longer have a use for it? After all, you would be distributing a product created by a business without their authorisation.
Actually you have their authorization. Legally speaking. It's called property law. The legal responsibility of the object in question is passed on from the previous owner (usually a retail center) to the consumer. The consumer then has the right to do with his/her physical property has he/she wishes.
But software isn't physical property and thus does not fall under the same legal definition.
You know, we must be the two most annoying technology people on this forum. I wonder how many people think our debating in various threads is pre-planned? Or even how many believe that we are the same person? I'll have to investigate.