Which detail from "undercover farmer" best shows that the narrators activism on behalf of farm animals changed practices in the community?

The detail from "undercover farmer" which best shows that the narrator's activism on behalf of farm animals has changed practices in the community is the following: "three weeks later, two businesses had signed on and two more said they do think about it."

This statements shows that two businesses in the community has introduced the so expected change already and two more businesses are on the brink of doing the same. So that, the narrator's activism is showing  positive results in the community.  

can you say more details