If I offered you a trip to Hawaii in a years time for filling in a two page form would you take it? There’s no privacy reveal, no obligation, no catches. Nearly everyone except those who think they are worth more than $1,000 an hour would.
Changing credit card providers can acheive just that. For many years I have run a Visa card with no frequent flyers on it. I couldn’t be bothered changing. Really the cost was filling in one of those forms, I seem to get nearly every single day in the mail from all sorts of reputable banks.
Seems like a no-brainer, but I still haven’t done it.