Sure physics is “stuck” in the sense that in the last 30 years it hasn’t made the progress as revolutionary as in the 30 years before that. But it’s still progressing probably as well as any other foundational subjects. What happened in the late 20th century was more of a miracle in the history of human knowledge. We couldn’t expect that to happen every few decades.
Epic is conveying that the 30% cut on App Store was raising the prices. But Xbox and PlayStation has the same cut, yet Epic has lower pricing on these platforms.