Everything about it is against your nature: fixed schedule, dictated product and process, micro management and arbitrary accountability compared to the creative freedom of your life when delivering academic performance on a timescale of weeks or months was your only responsibility. Worse still, it's not an "X year work program," it's designed to be endless.
Not that an entrepreneurial career is for everyone, but if you can be dumb enough to try and smart enough to make it work at a sustainable scale, it sure beats a guaranteed slow corporate death.