The incumbents they've displaced are insanely horrendous pieces of crap (I will name none of them) and as a technical person they are all light years ahead. People that badly implemented a previous technology stack are likely to mess it up again though (see CMDB implementations). SOAP services that at least kind of work are even a god-send in this market let alone something resembling REST. The sales cycles for these stacks previously were so long that entire generations of software came and went along with architectural patterns.