Right - if Shake Shake complained about the $0.99 hamburger, it would be implying "... which is a perfect substitute for our $8 burger."
The issue isn't two laptop stands. It's that one laptop stand is claimed to be a rip-off of another - ie too similar. But it's cheaper so if it's too similar than the first one was a rip-off for the consumer. (ie same product, worse price.)
Yes, one man's rip-off is another man's profit margin but nobody is owed their margin. They can't expect anyone else to cry when their market-control is broken.