Is the who is having his or her own app available in playstore?
Of course, everyone in the IOS app store and Google play store are app developers who have published. You don't get published, you are the publisher. Unless of course you end up working for a company.
It's fairly easy to publish and app that you have made.
Actually my question was that is there any one who had tried to make an app and had been published?
Rephrase your question please and I shall answer it to the best of my abilities.
Not me :/