BIL in law has been a carer for his dad for the last three years but prior to that MIL was doing it for the last two decades. FIL has now passed away and BIL is on his own. He has a job but has never had friends or partner. His life has been massively stiffled by his family - even prior to taking over the caring responsibilities.
Dh is obviously worried about him. In the past, he's tried to offer advice and support but BIL is too repressed and timid to do any of it. It seems unlilely that BIL would develop his life beyond living in his parwnts house now on his own and working mainly from home.
At our end, we both work full time and have two primary aged kids. But it feels that unless Dh moves back in with his brother for a while to guide and basically tell him what to do - we really won't be able to help him much in developing his life. Would that be a ridiculous thing to do? We all live in the same city but it takes one and half hour to get from ours to his so it's not like Dh can meet him a couple of times a week for a drink after work.