Tesla increased its control over raw materials by producing much of its own batteries and buying mines of lithium, a key input to its manufacturing process. This is an example of creating value by using

related diversification to acquire market power by pooling negotiating power.

related diversification to acquire economies of scope by leveraging core competencies.

related diversification to acquire market power by integrating vertically.

related diversification to acquire economies of scope by integrating vertically to acquire market power.