We do, but I think
@swhitset 's comment was made with the injury bug in mind. Because we would also know what we would be getting where he to be injured. Nothing. Hence the lottery metaphor.
Mack is a great player who no doubt would make our D better when on the field. Yet the investment would have been killing for a team like the Packers were he to reside more in the injury ward than on the field, something which is very plausible for a football player, especially an edge rusher.
I too was kind of bummed out when we missed out on him, but only for so long. Now I am happy that we didnt because it enabled us to make today's moves and furthermore possess solid draft capital. Better not to lay all your eggs in one basket.