Shamus, unfortunately I find that most people who point to the crash of '83 actually do so as a populist warning than any sort of familiarity with it, that Wikipedia link included. First, the crash started in 1982 and not in 1983. Starting with Atari's adjusted earnings report on December 7, 1982 that caused a backlash in the industry illustrated by a massive stock drop across the rest of December for all the companies in the industry followed by layoffs in early '83. With Atari as 80% of the consumer industry at the time, when it has problems, everyone else is going to as well - especially when Wall Street analysts had been bucking for it to happen and complaining about the volatility of the market for some time.
The problems that caused it were already in full swing by the Summer of '82, long before any claimed games like E.T., and purely had to do with the lack of any logistics or inventory control, all in an effort to keep up with Warner's profit demands to bolster it's own stock. In 1981, Atari couldn't keep up with manufacturing demands so distributors started doubling their orders in an effort to get enough product for the year. This was further compounded by the fact that in October 1981 during a meeting with it?s distributors, Atari had asked them to commit to ordering product for almost all of 1982. Unfortunately, manufacturing caught up by '82 and distributors were left with mass amounts of overstock due to the competitive climate (by Summer '82 there were six consoles on the market, with three more announced to enter that year along with an exploding third party software and cottage industry). As Geoffrey Wheeler, editorial director of Game Merchandising magazine would tell in the New York Times on December 9th, ?In June 1982, there were about 100 different game cartridges on the market; now there are about 400, and more every week. We?ll be glutted by next year.? Richard Simon, an analyst with Goldman, Sachs & Co. would also state in that same New York Times interview, ?1981 was a wonderful window to enter the business; you could build up a power base immediately; Yet if those same companies tried to enter the market in 1982, with the same talents, they would find it much more difficult. It?s a tough business now.?.
So by the Summer of '82 you now had order cancellations and returned stock piling up in warehouses and no strong communication with manufacturing, because Atari had never dealt with the possibility of this scale of returns before. Losses from warehouse overstock were already at $65 million by the beginning of August and only getting worse. By Fall, Atari started playing games with it's reporting to cover the mounting losses, including adding extra time to the quarter, but it finally caught up by the earnings report that December (and the situation is also what lead to Ray Kassar getting in trouble when he had sold some stock and was accused of insider trading).
Additionally, that's not correct regarding E.T. That was Warner who forced that situation, not Atari. And specifically Warner chairman Steve Ross, who was trying to woo over Spielberg to Warner, and set up the deal with him over a weekend party at his house in the Hamptons and then sprung it on Atari. It was that deal and Spielberg's demands in it that lead to the accelerated timeline and the need to manufacture so many just to break even because of his guaranteed royalties.
The results of the crash that started in '82 were spread out over a one year and seven month time period, coming to a conclusion in July '84 when Steve Ross decided on his own to split up Atari Inc, selling it's Consumer Division to Jack Tramiel to start up Atari Corporation. During that time, just about every other major competitor left the Consumer market. Likewise, 90% of the third party or cottage industry went bankrupt, with a small percentage (such as Activision) jumping over to the Computer software industry (and the personal computer industry itself had just come out of it's own major shakeout thanks to Tramiel's Commodore).