So honestly I feel half of this paranoia just has to do with the Gaming Industries' recent track record as well as BDobbin's silly YouTube videos.
Not pre-ordering, if anything, doesn't help anybody. Publishers rely on pre-ordering to make sure the game is a steady investment for future titles.
Low pre-orders only mean that the developer gets hurt in the long run, it won't somehow persuade the big-wig publishing company that "Oh golly, we better have a complete game on the market by release date".
So what can we do to prevent incomplete games from entering the market, well, incomplete? Voice your displeasure! If something isn't up to standards then never settle, but don't just mindlessly bash pre-ordering.
Obviously if you don't want to pre-order then you don't have to, but having all this hostility towards pre-ordering just doesn't sit right with me, and if your really that up in arms about the game then wait til' after said game releases... Or better yet, don't buy the game!
Edit: When I pre-order, I put my faith in that company that they will have the game done, so when I Pre-order Fallout 4 I am 100% confident that the game will be complete and worthwhile.
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OP doesn't understand the sick culture that is pre-orders. They have been incredibly damaging for video games. The emphasis on pre-order sales has led to companies feeling compelled to rip content from their game as a pre-order bonus. This often results in exclusive content divided among several retailers. It puts pressure on companies not to delay their games resulting in some titles coming out as unfinished messes. A developer that wants to take risks can be punished if their new idea isn't translated to pre-order numbers. Pre-order culture has been widely criticised. The very problems you think pre-ordering prevents and being caused by the phenomena.