
you get all of the profit
This isn’t always really true. You should get a better share for sure, but (obviously heavily dependent on what you do/where you are etc.) in some cases you start to realise how much of your money is STILL sucked away by landlords and middlemen. You own none of the means of production - so if your business requires said means, be prepared to still pay rich people ludicrous sums.
Sure, sometimes they will be small business owners, but not good ones actually providing value. Nobody minds paying someone to actually do useful work.
My point is money can be sucked away and opportunities stolen by owners who do no labour to earn it, in either case. Sometimes it’s your employer, sometimes it’s a landlord, sometimes it’s more complex.