Their answer should be combined with the size of their organistion. Pretend, someone like google has their own internally developed web server. It makes sense,

Their answer should be combined with the size of their organistion. Pretend, someone like google has their own internally developed web server. It makes sense, they have the manpower and the need. But when a 10 person tech team has their own internally developed bug tracker for no real reason, that's something to worry about.