I had a job offer like this with grand visions and promises of greenfield freedom, with the goal to compete with someone big in the payments sector who was and

I had a job offer like this with grand visions and promises of greenfield freedom, with the goal to compete with someone big in the payments sector who was and has since eaten their lunch, by WorldPay years ago. No product ever came of it and others left early from good salaries due to the endless political infighting that handcuffed the entire thing. Same thing happened again more recently with a company that has to remain nameless I'm not saying every opportunity in institutional fintech is like this but initial appearance and promises are easily wiped away once middle management get a smell of it, far more so than in other industries.