That section (and similar in section 6d) is not about the written offer of source code. The written offer of source code is instead covered in section 6c.

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abdullahkhalids 4 hours ago | parent [-]

Ah.. Thanks

> c) Accompany the work with a written offer, valid for at least three years, to give the same user the materials specified in Subsection 6a, above, for a charge no more than the cost of performing this distribution.

	▲	immibis 3 hours ago \| parent [-]
		So according to the legal theory expressed in this thread so far, nobody can sue anybody and there's no obligation to provide source code. The copyright holder couldn't sue because the license was followed (an offer was provided) and the end user couldn't sue because the offer doesn't have to be followed up on. Or, instead of theorycrafting reasons why it shouldn't work, you could "just" sue them and see if the judge agrees.