There is competing, which is trying to make the same basic product but with some differences, and there is innovating, which is bringing a new product to a new market. Innovation beats competition, generally.

The Shield is an innovative product line that gained a huge market share quickly. Now it is a competitive product, still with a big lead. To change this product to compete against the competition? Eh. It is still the leader and will likely remain so as the market apparently likes it. Lots of profit still rolling into S&W from this product line without changing it.

Better to innovate a new product/market and get ahead again.

Like the two EZ’s. They are just getting going, and the competition has yet to produce equivalent products. Guess whose going to have over a million units sold before competitors try to get their left over market share?