Because you can’t create real, 100% physical isolation. At a minimum you’re going to have power lines that breach the walls, and either people moving in and out (while potentially carrying portable electronics) or communication lines going out to terminals that aren’t isolated. Also, this kind of physical facility is very expensive to build, so the more elaborate your plan is the less likely it is to get financed.
Military organizations have been trying to solve these problems ever since the 1950s, with only a modest degree of success. Even paranoid, well-funded organizations with a willingness to shoot people have security breaches on a fairly regular basis.
Because you can’t create real, 100% physical isolation. At a minimum you’re going to have power lines that breach the walls, and either people moving in and out (while potentially carrying portable electronics) or communication lines going out to terminals that aren’t isolated. Also, this kind of physical facility is very expensive to build, so the more elaborate your plan is the less likely it is to get financed.
Military organizations have been trying to solve these problems ever since the 1950s, with only a modest degree of success. Even paranoid, well-funded organizations with a willingness to shoot people have security breaches on a fairly regular basis.
1) The generator would be in the isolated area.
2) Lead-lined airlock, and obviously portable electronics wouldn’t be allowed in the isolated area.
3) If you have communication lines going to terminals which are not isolated, then you haven’t even made an attempt at isolation in the first place.
4) This is a point about practicalities, not possibilities.
5) The relevant comparison would be the CDC, not the military.