Although in reality it makes a big difference, in my model it does not - my model varies only the size of the company, since that's all I could find good data on. I found another source saying that the age of a company was about 30% more important in predicting its survival than its size, but because it was a complicated regression I was unable to exclude terms that had absolutely nothing to do with cryonics.

It is probable that you should shade the probability of Alcor surviving up and the probability of KryoRus surviving down to account for this.