What you must remember is that bricks-and-mortar shops sell stuff that moves quickly; they aren't interested in slow-moving (in their terms) items like men's tights. Plus, at this point, so few men even know there is such a thing as men's tights, never mind buy them, so the priority at the moment is to get them into the public eye, and try and catch as many potential purchasers on the web as possible. That way, the manufacturers of the product will be able to ramp up production, spend more on advertising, and get to the stage where economies of scale begin to bite, so all us male wearers can buy our tights for less! I don't think any 'real world' shops would be interested in stocking (no pun intended!) an item which has such a small 'niche' appeal, but if we all keep plugging away at making men's tights more everyday and mainstream (by buying and wearing them) then who knows; maybe one day we will be able to walk into a store and buy them over the counter, but I don't think it will be anytime soon!
As mentioned in a previous post, if one European manufacturer of ladies hosiery produces 200,00 pairs A DAY (I doubt there have been that many men's tights sold EVER!) then we have a LOOONG way to go yet!