Removing emissions from smokestacks is critical to ensuring we can stop dumping waste into the sky, but we are at the point now where we need scalable, low-cost processes to pull carbon out of the atmosphere.
So, we need to definitely do what you're suggesting and capture all emissions from as many smokestacks as possible until we've fully transitioned to a clean grid. And, we also need to begin pulling CO2 out of the atmosphere.
I wish you guys luck though, hopefully you can carve out a niche market which will mean carbon capture technologies are ready when the time comes.
In the UN's most recent climate report [1], most of the pathways that are shown to avoid a 1.5°C global temperature rise involve both emissions reduction and carbon removal. Since the current technology portfolio is not anywhere near where it needs to be for any of their suggested pathways, we need new solutions (not just Noya's!) to be developed and scaled to give ourselves a shot of removing the amount of carbon required.