It is called Privacy. Why do organizations like Amazon need to know what your spending habits are
to make more money of course!
there is a huge market for it. from advertisers to government. and when there is a demand for some service there will be supply for it at some point too. for example there have been hacks of exchanges, wallet hacks,... scams, Ponzi schemes that ran way,... and lot of things like that. their company can advertise that they can catch these people and get paid to "try". and there is always the government that they can sell this information to!
in any case this is old news and it is not the first company to offer such services. and won't be the last.