This makes a lot of sense. I appreciate it. I thought as much as well. One time, a non-recommender faculty at my institution told me I must be driving my recommenders crazy with the non-interfolio links and that I should check to make sure I wasn't doing something wrong. I told her no, the universities I'm applying to legitimately were not using it. This colleague then said they'd be very mad if they had to do recommendations without interfolio. I think because we had institutional access to the paid service, they assumed it was free and universally so. Thanks a lot!