Funding!
Haha, yeah I think every doctor wishes they had a designated unit or space to deal with their problem, but funding is such that we have to rely on generalized hospitals, wards and units to face problems that are very specific in nature.
Some hospitals do have specific infectious disease units which deal with antibiotic-resistant systemic infections, and entire deparments dedicated to sharing information and research on the topic... but again due to the problems outlined above we're not making a great amount of progress. For antibiotic resistance there's a dual issue of logistic AND technical barriers we're just not able to surpass at the moment.