BFR is unproven, no one knows whether it could take a payload of hundreds of tons. But yeah, in theory you could just build a bigger rocket. But even going fro

BFR is unproven, no one knows whether it could take a payload of hundreds of tons. But yeah, in theory you could just build a bigger rocket. But even going from 50 to 100 tons increases the size significantly, let alone going to hundreds of tons like you said. Maybe that's not possible with today's technology, multi stages and all.