1: the problem with video recording and distribution is that it makes it very easy for people to access these movies or shows the film industry makes and people can just get them for free from their home, why bother leaving home and paying when you can get it for free in the safety of your home? this negatively affects the film industry.
2: the radio and television can broadcast these new movies/songs and people can just listen/watch all these media for free, but there is also a good side to this, it´s practically free advertising because people get to listen to a free sample of your music and if they like it, they will buy it when if they hadn´t heard your music for free they would have probably never heard your music or watched your movie.
3: the negative impact the internet has had with the mass media is that all the products of sound or film can be distributed for free in different sites such as piratebay. But then again it also has the same positive side that radio and television has as in its free advertising. The effect of the internet was massive connection for everyone and anywhere in the world, which is good for sending a message or commercial to anyone, but bad because its very easy to distribute these products.
4: the big difference between proffesionals and amateurs when distributing this film and sound is that proffesionals make sure they appeal to as much npeople as possible with a as broad as possible mindset, they make music with low personality so that its very hard to not like it, while on the other hand amateurs are only worried about appealing their own audience which is smaller but more critic and harder to appeal. These two roles can in some cases be interchageable but most proffesionals would never sacrifrice the profit just to appeal to a more select audience, and on the other hand most amateurs frown upon this bland music that is just made to appeal to everyone, although some amateurs would go mainstream if given a chance, although this is highly frowned upon in the internet community