Little known tidbit of information on ColecoVision and Nintendo:
Nintendo and Coleco engaged in negotiations regarding the distribution of the ColecoVision console in Japan, but they ultimately couldn't reach an agreement. According to Bert Reiner, Coleco's former Vice President of Product Development, the discussions centered on Nintendo's desire to handle manufacturing and marketing independently, offering Coleco only 10% of the selling price per unit sold in Japan. Coleco found this arrangement less favorable compared to their proposal to sell the console at 10% below their wholesale price, allowing retailers like Toys 'R' Us to purchase it for $9 instead of $10. After extensive discussions, the deal fell through. This led Nintendo's President, Hiroshi Yamauchi, to announce that Nintendo would develop its own game console, resulting in the release of the Famicom in 1983.
This was already after Coleco struck a deal with them for Donkey Kong port (it was bundled with ColecoVision).
It would be interested to see what console market would look like in alternate history where Nintendo is distributing ColecoVision in Japan and Coleco is not stupid enough to kill it for ADAM.