While these are not "software-specific" business books, I would say it's more important to spend time mastering the fundamentals[1] of business, which is the skill of finding people who want to pay for what you have. Everything else like management[2], operations[3], and marketing[4] can come secondary. This may sound cliché only because real business skills are boring, the same way "To get healthy, diet and exercise" sounds boring.
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While these are not "software-specific" business books, I would say it's more important to spend time mastering the fundamentals[1] of business, which is the skill of finding people who want to pay for what you have. Everything else like management[2], operations[3], and marketing[4] can come secondary. This may sound cliché only because real business skills are boring, the same way "To get healthy, diet and exercise" sounds boring.
[1] https://jamesclear.com/fundamentals
[2] Marc Andreessen: The Hard Thing About Hard Things
[3] Eliyahu Goldratt: The Goal
[4] Chip and Dan Heath: Made To Stick