It is starting to be understood that there is a huge need for global methane measurements. Lot's of companies are starting to (or already have) move into this

It is starting to be understood that there is a huge need for global methane measurements. Lot's of companies are starting to (or already have) move into this space, and I've seen several mentioned in the comments here. But I think it is worth mentioning that measuring methane (and other greenhouse gases) from space is an extremely hard problem. The precision/accuracy requirements to be able be able to globally characterize methane sources/sinks, which is one of the goals of TROPOMI (the instrument used here), are extremely stringent. These commercial methane sensors are mostly designed with the goal of identifying sources, rather than rigorously determining their influence on the global methane budget.