It is good that blockchain becomes useful and can be used for the sertification of production and check the origion of production. But a lot depends how actively will be developed the project and how many projects will be checked.
To have a lot of projects and goods for analize it is necessary to have a big marketing and advertizing campaign that people know about this platform and how it is possible to check the goods.
It is necessary to know the origin of the goods. You are right that there are so many fake goods that every people can buy fake goods. They do not know that their goods are fake.