A decision on whether extra entries will be accepted is expected to be announced in the coming weeks, with Andretti and Hitech the highest-profile candidates.
The process is run by the FIA, but the F1 organisation also has to agree to allow a new team to join the field.
Existing teams have made clear that they don’t want to let another entrant in and Domenicali has voiced his support for this position, stressing that a newcomer would have to add value to the sport - an argument previously put forward by Mercedes team principal Toto Wolff.
"On that, I'm not changing my mind,” Domenicali told Autosport. "It's not the money, as we have said, and I don't want to anticipate anything because there is a process and I think that I have respect the fact the FIA launched their process, and very soon we will arrive at the conclusion.
“As we always said, we need to make sure that the decision is right for the business. And this is what I think is the duty of the FIA and us together, that has to be taken. So that is another decision that will be taken in the next couple of months."
Asked if there were positives in allowing the Andretti/Cadillac bid to proceed he said: “There are positives and negatives, that's part of the evaluation that we're doing. So I cannot spoil or anticipate anything.
“We are doing things very seriously and correctly. So as soon as we will be ready for that discussion we're going to inform, as a discussion we're going to take it with the FIA together.”
Source: Autosport