I have installation media for MS Office 2010 in my desk drawer. If I lose the disc, I wouldn't expect Microsoft to replace it for me. I'm afraid I don't really understand what the author is angry about here.
When the purchase medium is a download link the expectation is that the link keeps working if the company is in business. Give a good reason it shouldn't. Edit: also, list your startups. I like to avoid doing business with people who think this way.
Famous last words.
There is a reason Internet Archive is so popular.
A lot of SW was hosted on ftp sites, which became "unsecure".