Of course I am ignoring the word "Usually". It's not a substantial word. How much is usually? There are always "uncommon exceptions" to some subject (see the implicit flaw with this sentence? That's because I don't use the word "usually". What kind of an argument can I make without the word "usually"?)
It disregards a whole field of volunteered hard work to make mesh networking technology accessible by people who don't want to buy "expensive, commercial" hardware and software.'
It sends the message: "Don't look further, because it's not worth it -- because usually other solutions are expensive and commercial."