Ahh yes, the ol' buy high, sell low strategy!
If I pay you 100k then you spend 50k buying land that’s not a “loss”. When a company spends 50k on R&D that’s generally an investment not an operating expense. Plenty of other dodges exist for physical assets via depreciation games etc. Even just buying more brand averting is an option to increase capital without being taxed on it’s creation.
For a business that really doesn't make a difference. If you have $1 billion in revenue but spent $999,999,999 in order to generate the revenue then your business income is $1.
Or the complete logical extreme. If I sell a dollar bill for $1 that's not income that should be taxed.
You always have overhead so you can’t actually sell 1$ for 1$. Breaking even requires selling assets for more than their worth to cover transaction fees. We let companies deduct those fees, but what’s a fee and what’s an investment gets blurred. Especially when most companies don’t suddenly get destroyed after a single transaction. The classic razor and blade model being a prime example for hiding profits.
Sure, cash flow may make it seem minimally profitable, but that’s only relevant in this quarter or if you run out of cash. Spend X million on software development or brand advertising and can have a tax free transfer from income to capital. Leverage that for a few decades and suddenly your business is worth 10x as much without any apparent profit. Clearly an asset was being invested in.