For 10 marker on why it was beneficial to have a variety of brands - I assumed that was the same as a market segmentation question???
For benefits I put: can charge premium pricing in niche markets and competition between brands owned by the same firm in 'high volume' (mass?) markets spreads risk
For disadvantages I put: costs of tailored products in niche markets may increase
Overall: increased costs of production in niche markets offset by potential for economies of scale in mass markets, overall high profitability potential and brand loyalty (depends on economic cycle/YED)
I stg I used the word 'offset' so many times in that paper...