We've got a block here in W.Australia that had a massive band of thick clay across it .. after twenty years it's been tamed by cutting long trenches into it when it gets wet enough to slice into with a sharp blade (it's harder than concrete in the summer) and blending those big chunks with dry sparse soil from other parts of the block - midway between the two is a nice mix that holds water but doesn't set like stone when dry.

But yep, that's the game with agriculture, long term steady work to improve conditions, soils, drainage, mulch pits, septic lines, fruit trees, etc.