Well you know that's what happens when your experience of gamedev ends at flash

Could someone with any reading comprehension skills verbally explain what "I'm giving the devs who had projects going before then a grace period" means to Skipcast?

I'm not buying any game built in Unity whose development began shortly before, during or after September 2023. IIRC, it was late September when they announced their change in price schedule, which 1. they indicated would apply retroactively, changing the terms of a contract after they had been agreed upon, and 2. evidence showed was partially intended to punish the use of a competitor.

I don't want a company that acts like that to succeed in business.

Why "shortly before" the announcement was made? Well, say you started development of Interstellar Bum Pirates that August, and 40 days later Unity pulls a Unity. What work has your team actually done in those 40 days? Probably more work in Word and Excel than in Unity; you've probably worked on the design document, outlined some game mechanics, drawn some concept art, maybe written some story. You're probably in the very early stages of programming, and that can probably be redone in Unreal, Godot, Source 2, Amethyst, Pygame, Commodore BASIC, whatever else you chose. "We're two years into this project, we're in closed beta, we don't have the funds to re-implement this thing in another framework." You guys are a maybe.

I'm not interested in entertaining excuses like "I'm used to Unity, it's what I learned in school, it's what I'm used to." 1. Congratulations, you have demonstrated the ability to learn how to use a game engine. Do it again. 2. Do you see this? It's the world's tiniest open-source violin.