No, but they didn't break out into new territories ill suited for the profit making crop either. Setting up some kind of slave based farming in the western territories was simply not a very practical idea.
I've read some of George Washington's writings on the subject, and in them he describes his difficulties in finding enough productive work to keep everything in profit. Yes, slave owners would look for anything even moderately lucrative if they had no other choice, but as you said, the real money was in cotton production.
Your big idea a few weeks back was that the Confederacy would be a roaring economic success, even to the point where Midwestern states would be tempted to join the CSA.
I'm not the only one that saw things that way. The newspaper accounts of that era also voice that very concern, and worse, that it would ruin Northern industries.
If the slave system was such a success, why wouldn't other states want to take it up?
It worked with cotton. Presumably there were people in 1860 that knew a thing or two about cotton farming, and who also knew the climates of these other regions and the ground itself would not support this economic system in those areas.
But in the late 19th and early 20th century, tariff-protected US and German manufactured products were usually far superior to what the free trade British turned out.
German's have long produced superior quality goods, especially regarding machinery. I think it has something to do with the fanatical German mind. As far as the US goes, late 19th century would mean after the protectionism had sufficiently capitalized these industries.
Slaveowners moved to central Missouri to grow hemp and tobacco. Outside the core area of large plantations, others from the same part of the country settled on small farms with a slave or two to raise corn and livestock.
That model, tobacco and hemp plantations in the lowlands along the river and small farms with a slave or two in the surrounding areas was possible outside the Deep South and was being put into effect in neighboring Kansas.
Once slaveholding had a politically reliable core, slaveowners branched into other areas and activities. I told you that slaves were used in textile and iron production, in mining, in railroad construction. They were also used in shipbuilding, lumbering, potterymaking and other industries.
You just ignore what people post to you and repeat what you've already said and think that you've answered objections when you haven't even addressed them.