Dunno where op was but in the UK at least it wasn't possible for the longest time to get the Dreamcast to use a flat rate dial up because Sega did a deal with British Telecom. This made multiplayer pricey af... I know this because my dad was not amused at the £230 phone bill I racked up in the first month of PSO 😅
As someone who has crossed over both and currently working in games, it's actually kind of wild how different a mindset games are. It takes a very specific skillset even in software engineering and there are unique challenges to both sides of the fence. Crossing over is not quite as easily transferable as you'd think