Maybe chicken meat is just easier to replicate with plants?
I was really surprised about how good https://www.eatplanted.com/ is (I am not a vegan).
In fact, however, there are _plenty_ of plant-based companies doing just fine (like Planted). I'm a fan of nearly all of their products and have watched their growth over the past few years, which has been nothing short of incredible.
I wouldn't worry about plant-based "meats", as the tech improves and we bring another 2+ billion onto the planet, they'll find their market share more and more.