There’s a great summary of current trends/activities in RPA leaders in Michael Baxter’s IA article here: https://tinyurl.com/yd3zjwko
The question of why RPA is such a boon to businesses running legacy, disconnected systems is not directly addressed, as the article is focusing on new, data intensive businesses that are looking to build new CRM > Operations scalable solutions.
While that will be the bread and butter of RPA advancement and deployment, for RPA to truly get onto “every desktop,” businesses with no digital agenda will have to buy in, which they should.