"Meet" can be either transitive or intransitive, so the object "them" is optional. But "fulfill" and "satisfy" are both transitive so the object "them" is needed. Is this correct?
Consumers have new needs that require new products to meet.
Consumers have new needs that require new products to meet them.
Consumers have new needs that require new products to satisfy them.
Consumers have new needs that require new products to fulfill them.
Without "them", the sentence is grammatically correct, but has quite a different meaning.
The first sentence means that the consumers' new needs need to meet new products. This is nonsense since a need cannot need to meet a product.
If you remove "them" from the sentences with "satisfy" and "fulfill", the word "products" becomes the direct object, which changes the meaning of the sentence to something like:
The new needs of consumers need to fulfill new products.
Again, it's a nonsense meaning, so while "them" isn't required grammatically, if you want to keep the intended meaning, "them" is required at the end of the sentence.
