Yeah, throw a copy of Outlook with a giant, uncleaned-for-years mailbox and a few instances of gen-u-ine Adobe-brand Acrobat and maybe a few spreadsheets in Real™ Micro-Soft® Excel©©®©™ and those figures can get pretty nuts, especially if literally anything is running in the background based on Electron. Like I've said, 16 is enough still, I just don't love selling new machines with that amount that will be expected to keep up five years from now -- it's machines with 8GB I wouldn't sell, period. Not without an upgrade.
Then again, as I've also said, if they're quibbling over the extra hundred bucks it takes to kit out a machine for an appropriate amount of RAM as a one-time expense at time of purchase, they're really not going to like our per-hour ticketing price or our monthly managed services either. We don't even really make money on the computers. We make margin, but it doesn't even cover the cost of my time for setup. It covers materials and maybe my drive to deliver and plug them in. I do data migration and setup anyway, at no extra cost, but we are actually actively losing money on that, technically speaking.
RAM is there to be used but if they're slamming the page file they're going to be pissed at us when it doesn't feel responsive.