Going strong for over a hundred years, both Victorinox and Wenger (I think Vic bought Wenger a couple years ago). Great, useful designs. A "gimmicky" tool for every trade and hobby. Traditional looking, doesn't upset people. Even a sharpening doofus like me can get those blades razor sharp. Instant recognition of quality, can be had at Walmart, Target, Dicks all the way up to knife shops, gun shows and high end retailers.
A better question to ask would be, why are there some SAKs out there without lanyard bails? Like the new alox cadets/pioneers.
Last but not least, I went on a multitool kick several years ago. Lots of Leathermans, a few SOG, but once I got a Swisstool Spirit, I was done. I still have a Wave (sits in my truck), might get another Powerlock, but that Spirit is great. As long as I don't use it all the time for fence repair (a pair of fence pliers are a pain in the butt to carry around when you're putting up or mending fences) the tool should outlast me.