I'm firmly in the BV and ASLRB should never be out of print- no faster way to kill a hobby than to have it's core tenets be unavailable to new blood. To those, like Honza who claim something was always waiting to be printed in this hobby, when exactly did TAHGC ever run out of ASLRB or BV as not available? I'll tell you when - 1998 when they locked their doors. Never before was it unavailable or out of print.
Yes MMP has limited storage capacity. They also have at least 20 years, if not more, first-hand knowledge and datasets on how many copies of each are purchased annually - so running out is just not a viable option if the desire is to keep the hobby taking in new players. It takes me about 30 minutes to forecast a Hi and Lo supply schedule for any product in an inventory based on historical sales/demand figures. you order when the product base hits Lo, and you don't run out - its called just in time inventory- and has been a standard business model for well over 40 years now. MMP has limited storage capacity for inventory - no problem, most businesses do, my own included.
I'm not going to run out of stock on 12 ga shotgun shells or on dog food or on game bred pheasants - they represent the core of the business. The ASLRB and BV are the core of the business. Establish a Hi/Lo and keep them in stock - Adjust to meet sales forecasts as annual data is updated every April 15th. This is not rocket science, its business model management, something damn near everyone I have ever met in ASLdom is quite familiar with.
The rest, sure, print/re-print based on supply and demand historical data, updated regularly. Run out after prints are sold - do not maintain excess stock of modules / components that are not part of the core for the system - I run out of mosquito repellent, hunting license protective holders, e-collar models for dogs, training dummies, t-shirts with the business logo on them - etc, from time to time as well. None of them are requisite for clients to enjoy the hobby. They still have Hi/Lo inventory - but if space is required, they will get out of stock on one or more occasions, as supply and demand of the core requirement items increases/decreases.
As always, YMMV