In reply to Sajan Kota.

WordPress theme developers have not completely accepted the gutenberg.
Sounds like the perfect time to me.

It only closes theme opportunities if that's how you view it. Personally, I'm much more excited about the possibility of a more unified and consistent WP experience vs. worrying about what themes have grown to be and how page builders are supposed to fit into this.

Evolve or die.

The nice thing about open-source is you also have the extra option to contribute. ✨

Since the beginning I've been told this was the direction of Gutenberg, and I've been anxiously awaiting for the day that site builders can create a well-designed container with beautiful CSS for people to plug in their own content via blocks. When smartly designed, it will make for empowered WP users all-around.

The balance will be how much control builders give their customers. Some key design considerations & trade-offs will need to be made, but can be completely customizable depending on the needs. Hence the beauty of WordPress.