To be fair to Williams, they didn't undercut the production of MM by thousands of orders, they only made exactly what was ordered. This was a big deal because before MM, they would run the line on whatever game was next and a lot of distributors and purchasers would wait to buy because they knew Williams would need to give heavy discounts to blow out the inventory that wasn't selling in the near future.
MM was seen as a big hit and had relatively strong distribution orders. Williams surprised everyone by filling those orders and then saying the game was done, leaving money on the table with the thought that distributors would go back to buying more to ensure they got filled after that point.
Instead, distributors just bought less and less.
It wasn't a good relationship for either side and Williams thought they could do something by withholding production. It didn't work.
Stern figured out how to navigate this year's later by being able to do really short runs of games. I was in the factory once where there were three different games on the line at the same time. By being able to do that, Stern isn't stuck manufacturing either far too many and needing to blow them out, or far too few and leaving the buyers wishing for more.
To bring this back to Alvin G slightly, Alvin G was unable to do this too, which resulted in the low runs that they did for each of their machines, followed by those machines needing to be blown out at heavy discounts.