Why dont IT guys just make their own apps & games?

The majority of critisicm towards IT is how its difficult to get a job as a junior unless youve done alot of work on your portfolio (github or whatever the fuck).
And to me that sounds stupid.
You literally have a 100% control of getting employed because you can improve at home with your computer.
You dont need to send applications and pray somebody gives you a chance like in other lines of work.
You can bust out shit on your portfolio every single day.
Get good at it.
Hopefully make money from your apps or other projects. If not theyre on your portfolio that impresses a employer.
You dont have to earn merits on your CV kissing ass in entry level jobs.
1096 ng/dl