The unpredictability of prices for the upcoming year is a limiting factor for any business. Especially for those managing multiple servers, as various licenses start to add up.
I think the maximum tolerable increase is around +20% YoY. Increases like this year, however, make switching panels very appealing. The same is happening with cPanel. They're betting on people’s reluctance to face a potentially very costly migration, which is understandable. But they will lose all the tech enthusiasts and many hosting providers, who are already being alienated by their partner policies. In short, they’re increasing the average spend but reducing the number of licenses. With the alternatives available on the market today, including free options like CloudPanel, hard times are ahead for Plesk.