Given code like this:

    class RatingsController < ApplicationController
    
      def create
        success = RatesBusiness.add_rating(params[:business_id],
                                           params[:score],
                                           current_user)
        render json: {success: success}
      end
    end

Wouldn't it be better something like this (just to adapt to rails)?

    class RatingsController < ApplicationController
      logic = RatesBusiness
    end

Or, even better

    class ApplicationController < Controller
      def initialize(logic):
        // do something 
      end

      def create:
        // do something with the logic
      end
    end

And adding some routes for each logic.

But, then, you could just extract the route from the logic name (and get the rails controller back, that now it would be called "Logic")

My point is that extracting code just for the fun of it seems worthless. What is the rationale in this case?