Some have acknowledged the contributions of Mike Wolf to the renaissance or glory years of toy trains. There's likely a demographic correlation between baby boomers retiring and MTH's explosion in the marketplace.
From my perspective, it was MTH's wonderful selection of buildings and accessories, many of them being Railking yet O-scale in size, that greatly helped those of us who were (and still are) building layouts on a budget. Like JLC, Mike evidently understood that accessories were the key for engaging kids (of all ages). It's interesting that Lionel is now making some former Railking items under the Lionel name. MTH also recently announced some new Railking buildings, same buildings just different names.