Landfills can be capped and farmed for methane, dairy farms can also be capped and farmed for methane, usually to fuel the farm itself as I have personally seen

Landfills can be capped and farmed for methane, dairy farms can also be capped and farmed for methane, usually to fuel the farm itself as I have personally seen done, and natural gas facilities could capture a lot of their emissions if they were willing to spend a few extra pennies. Those are all solved problems, but we let profits dictate which technologies we utilize.