Is something wrong with me that recently I stopped being excited about tech, products, disruptive ideas, making world better etc.
And just want to make money, as much as possible, don’t care how (as long as it’s legal).
Is it a good start for starting new project in tech world?
Because creating software products is the only thing i can do very well.
But except few small exceptions all my life I’ve been working for companies, exchanging my time for money, building software.
Anyone created profitable and lasting IT business being motivated only by money?
The problem with "make money" is that it's mostly a short-term, proximate motivation. As others suggest, you need to figure out what you want the money for. Starting a business is a long-term proposition, so you'll need to find your deeper motivations.
And note that motivation isn't a static thing; it's a thing you nourish over time. So whatever business you pick, it should feed your motivations. E.g., I know somebody who has run a bookstore for 20+ years. He could do things that make more money, but he loves interacting with customers and talking about books on a daily basis.
One exercise you could do is to write your own obituary. Start by going to Legacy.com. Read a few of the famous-people ones on the front page. Next search for your first name and read a number of those. Leave the good ones open in tabs. Then open up a blank document and start typing yours. Refer back to others as needed, borrowing freely. What in others' obituaries resonates for you? What do you want your life to have been?