转让给微软之后，特别是微软与IBM牵手之后基尔代尔才就此提出异议，而IBM为了减少麻烦转而答应与之合作——此前虽然迄今仍旧广为流传的IBM找其合作之时他正驾驶自己的飞机消遣，实际上那根本就是个“罗生门故事版本”——但基尔代尔的操作系统定价高昂，由此微软大发利市。The Plot to Get Bill Gates（中文版《对抗比尔·盖茨的阴谋》）一书对此有比较详细的介绍，也是比较早的全面记录，该书作者为调查记者，书中包括比尔当初无理要求占据更多股份的内容都经过了与比尔核实。

http://www.theregister.co.uk/2007/07/30/msdos_paternity_suit_resolved/在报道帕特森名誉权案子中顺带提及：

(DR came to regret not suing Microsoft "very early on". For his part, Paterson was to plead that his operating system of choice, Kildall's CP/M-86, was at the time unavailable for products based on Intel's 8086 that he wanted to sell, necessitating the hasty clone).

DR是基尔代尔公司Digital Research缩写。