Should companies be allowed a second industry charter in exchange for requiring players to spend two additional company charters?
Often when composing company combinations there's an awkward situation where companies cover ~80% of the critical industries by the late game but there's very few options to cover the remainder barring founding companies that are either suboptimal or have significant overlap with another.
Obviously letting players take additional industry charters with no extra cost would be overpowered, but what about doubling the cost of a second industry, tripling the cost of a third, etc?