As mentioned previously, competences and abilities are individual traits, and you can’t simply say you are better at being an entrepreneur at a certain age.
Also, many think being an IT entrepreneur is primarily about doing engineering stuff. I’m an engineer at the “core”, but I’m well aware sales and marketing are often more important than spending most time on development initially, and I’ve worked with both sales and marketing, negotiating with and setting up deals with initial customers.
Rather it’s key to start simple on the technical side, with the core and unique concepts in place, and develop further when the market and finances allow. Also, be prepared to change business model and offerings at any time. Don’t beat a dead horse.