Dlc costs and future dlc

I paid £40 for the season pass…

Which works out at £10 for each dlc which is great value and worth it imo…

I’d be happy to pay £10 for a new dlc every 3 months or even a month…

Is that viable as in would gearbox make money this way and what would be a realistic timeframe to put out content that size…

Anyone that understands the working of videogame making and marketing fill me in or have an opinion…

Thanks