considering they've only been at it in F1 for 1 and half seasons i don't think its been a disaster by any means. They've not been the slowest team, they've not failed to qualify since the 107% rule has returned. As an experiment into the ability to use solely CFD i'd say it was a pretty successful one. It takes a long time to learn and build the speed to move off the back of the grid, unless you buy it in direct in terms of parts or personnel. They were arguably on the steepest learning curve and the timescales unfortunately have not filled the backers with confidence. Its a pity to lose the Wirth team as at least it injected some variety into the approaches and i do think they would have been able to improve as they refined the model and the processes. The quickest way to get to the point where CFD is a viable and competitive alternative to the traditional approach of the other teams would be to stick with it in comeptition with an F1 budget and learn how to make it better.