Richards promised to apologise after making the remarks last week, and league chief executive Richard Scudamore said on Tuesday that the chairman had rung those he may have offended.
But Platini said the apology may have got lost, and the chance of a face-to-face apology was lost when Richards also pulled out of attending UEFA's Congress in Istanbul on Thursday.
Platini said: "I read in an English media outlet he was going to send an email - maybe the email got lost in the corridors of UEFA but I never saw it."
He added: "What he said was slightly surprising because I know Mr Richards's ingenuity.
"He said football was stolen from England and that a gang has done this. We are not a gang at UEFA and the English are so generous they have given football to the entire planet.
"Football now belongs to the whole world and I want to thank England for their gift to the world."
Richards had been due in Istanbul to due to sign a contract with UEFA in his capacity as chairman of the European Professional Football Leagues (EPFL).
The memorandum of understanding between the EPFL and UEFA was instead signed by Sergey Pryadkin, the president of the Russian Premier League.
Platini added: "I don't know the reasons that motivated the president of the EPFL not to come. What was important was to have the contract with the EPFL signed."