It’s common. And it’s not going to change, and will get worse the more successful you get. It’s rare anyone not in business to understand how it works.
Just wait till your sibling decides to start the same business. The feeling of betrayal would be immense. And you also have a friend coming in, that’s a possibility as well.
The issue is, people think that you just show up and do nothing to make the money. The people who actually are in the game know how hard it is to work through all this- managing to get new clients, managing finances payroll and so on.
The solution? Get a thick skin, and stay humble. No bragging, or sharing your plans with anyone. Just keep your head down, work hard and when you make bank, make sure you have fun with it as well. That Porsche isn’t gonna drive itself.
Learn from them, see if you can buy some of their assets for cheap.
Most probably someone else will come because there’s a gap in the market and there’s only one service provider.