Far less reluctant. Product placement, is so obvious anyway, but the alternative is some fictional name/logo. It doesn't detract from my experience, so I'm okay with it (for now).

As long as it's not something utterly absurd - like that Nokia tune in J.J. Abrams' (bastardization of) Star Trek.

Subtle product placement ("we need a product here anyway, do you want it to be yours or your competitors") seems completely fine to me. If the script calls for them to drive a car or drink a soda, and nothing in the plot depends on the details, then why not?

As for "native advertisements": it really depends on genuineness, and disclosure.