It isn't that Radia succeeded in all her businesses and mandates.
Despite her best efforts, she couldn't convince Mamata Banerjee to alter her stand on Singur, nor was she able to get Tata to meet the enigmatic leader.
Rivals say she depended too much on the Left government to push the deal through.
Her friends say Singur was a success because public sympathy eventually turned in favour of Tata.
Noesis too wasn't a grand success. While she hired retired bureaucrats, they did not get any business and depended on Vaishnavi for fresh mandates.
She also flirted with advertising. And her attempt to get into financial public relations, in collaboration with global agency Financial Dynamics, didn't really take off.
Radia's biggest failure was to give wings to her dreams of owning an airline, thanks to fierce opposition within the government as well as from existing airlines.
Radia promoted Magic Air which was to be a low-cost carrier but the government (Praful Patel was the aviation minister) stopped her because foreign investment was not allowed in the sector.
She also made an attempt to buy Sahara Airlines with a consortium of investors but found the price tag forbidding.
"I think there was always this fear from other airlines that she would rope in the Tata group and get in big money. And her rivals would not like that to happen," says an aviation insider.
Image: Mamata Banerjee (5th R), chief of the regional Trinamool Congress party, marches with party activists during a protest rally in front of Tata Motors' small car project at Singur, north of Kolkata, in this September 26, 2008 file photo.