Compared to crucible steelmaking technology, converter steelmaking not only improves steel quality but also significantly increases output.
Each "batch" of crucible steelmaking can only produce 30 to 50 kilograms of steel. Even the top steel mills in England currently only produce about 20 tons per month.
In contrast, a converter in converter steelmaking can hold a ton of molten iron at a time; this is a small furnace; once the technology matures, there can even be converters holding hundreds of tons.
Moreover, converter steelmaking is extremely fast, capable of producing a batch of steel in just 30 minutes.
Even a small steel mill can easily produce 500 tons per month per furnace.
If such technology were available, the price of steel would immediately be cut in half, causing all current crucible steel mills in England to go bankrupt.
In reality, in the so-called steel industry, iron has no real profit; it is the steel that commands a premium price.