How do designers fare when they change companies?

Mark Levinson, Bob Carver, Nelson Pass, Dan D'Agostino all started somewhere else and moved to start a new company.

Some of the guys at Infinity speakers left to start Genesis.

Dan D'Agostino has left Krell and rolled out with his own line of amps.

I'm sure there are others that I don't know about that are not mentioned above. Of the ones I've mentioned above, it seems Nelson Pass may have fared the best. Who are the success stories guys that have moved on?
David Hafler went from Dynaco to start his own company. Carl Marshasato [ phonetic spelling] has been several places. Tim de Parravicini [also probably misspelled] has been with Luxman before EAR. In England several of the better designers work as independent consultants or have been with several companies. Martin Colloms, Ben Duncan, Stan Curtis, Robin Marshall come to mind. Derek Hughes started at Spendor, his families' company, and moved to Harbeth. In general the designer tells you more than the company name.
John Curl and John Dunlavy also come to mind. I agree with Stanwal, the designer generally does tell me more than the company name.
One of the quietest guys in the industry is Kevin Voecks. He ran an audio store in Massachusetts, then started designing loudspeakers for Symdex. From there he moved to designing the excellent Mirage speaker line and after the untimely demise of Peter Snell took over design duties at Snell. He is currently the chief designer at Revel. He extensively used the purpose built facilities at the NRC in Canada and is associated with Floyd Toole, et al.
Charlie Hansen of Ayre (the electronics firm) previously had helped to start up Avalon Acoustics (the speaker firm). I would say that he has continued his success story admirably, IMHO.
I believe Jim White was at Theta Digital before starting Aesthetix. A success story for sure.
I would say John Ulrick, formerly from Infinity, is doing well with Spectron.

Too much cult of personality in "high-end" anyhow. Don't look behind the curtain at some of the real creative stuff in pro audio and parts manufacturers.