Sims are magic learning tools.
I taught in two different training establishments using Sims and found them to be very useful.....if those using them wished to be taught. Too many Helicopter Operators want to use their own Check Airmen and thus avoid Third Party evaluation of their crews. For way too long....most Operators only sent their crews to the Sim for training when required to do so by the terms of their contract with the customer (think Oil Company here). It was the Oil Companies that were the moving force for much of the use of Sims.
Corporate Operators use the Sims to a much greater extent and usually as a requirement of their Insurance Companies. Advantageous discounts in their premium rates result when they do use the Sims.
As the Sims are so expensive...and the size of most Operators fleets are so small....Helicopter Operators usually have to rely upon Vendors to provide the Sims. Airlines on the other hand have the advantage of numbers and can afford to own and operate their own Sims and maintain a Staff of people dedicated to the task of training and checking pilots.
Many Helicopter Operators just cannot afford to pay for Sim Training thus are very reluctant to take on that expense and prefer to do their training in the actual aircraft which in some cases is actually cheaper than the Sim.
Overall....it is hard to compare Air Line Sim usage to the Helicopter Sim business.