I've seen that too - but with corporate IT dept support - at a large UK mortgage lender running a loan origination system initially built in the 90s with an MFC Win32 GUI. Over the years the system has been so heavily customised by the vendor that it's practically bespoke. Migrating the existing system to run on modern OSes, or adopting a new system would be a huge expense, and can't be justified by any rational cost benefit analysis. IMHO there's a huge overhang of legacy Win32 GUIs out there. I'm hoping they'll fund my retirement.