That's a pretty disingenuous thing to say since Google, HTC, LG and Samsung are being sued, they're not doing the suing. Also, that graph is outdated, Apple is now also suing Samsung and Motorola... their other big smartphone competitors.
But then Google also does not have so many mobile patents as others. Currently royalty payments in all directions are 'fought out' through patent lawsuits. If you do not participate, you will be the sucker that only pays royalties, but doesn't receive any.
This is the annoying thing about the current patent situation: companies have to participate if they do not want to hurt their margins.
They're not suing competitors. They're suing people who are profiting from Apple research without compensating them. You think it's good that one company spends billions on research and everyone else just steals it and undercuts them? Don't you realize that that eventually leads to no research being done anymore?
Your statement may be technically true, but in this case it just comes to show the stupidity of the patent system - is making a link from text something Apple invented? Probably not. Did it need to spend billions creating it? Definitely not.
I think reality trumps made up laws, so I don't like your statement, as it just shows conformity to a broken system without any thought at all.