Final answer:
A gradual new product introduction is called a roll-out, which is essential when facing markets with high entry barriers. Strategies could involve innovation, brand development, and substantial advertising to overcome these barriers.
Step-by-step explanation:
The gradual introduction of a new product during commercialization is known as a roll-out. This strategy is often used when entering a market with significant barriers to entry. To successfully launch a product like a web browser in such a market, strategies may include innovation through developing new technologies to gain an edge, creating a unique brand name or obtaining patents. Additionally, investing in large advertising budgets may discourage competition. If the product offers a new twist on an existing concept, this may lead to a scenario of monopolistic competition, where there's a mix of monopoly-like advantages and competitive pressures.