[tgsovlerkhgsel]

Generally I don't think so, but sometimes legal departments are extremely careful and would rather spend money on an explicit license than relying on something they see as not 100% certain.

Offering this "service" seems like a great way to monetize your software, because it only hits those with overcautious legal departments that really don't care about the money, and everyone is happy: Legal gets their paperwork, company pays some amount that they don't care about, author gets money, engineers get to use it, everyone else who doesn't have a paranoid legal department gets to use it without any hurdles.

I'm pretty sure the author got sick of getting (from his perspective stupid) requests "hey you already said it's free but can you give that to us in writing, our lawyers won't let us use it otherwise" so he turned bureaucracy into money.

Edit: It's also a convenient way for companies to support the project with money. Very few companies have a "donate to this open source project" process, most have a "buy this software" process, so a company where the people using SQLite would like the company to pay for it now has a convenient way to do so.