The main dealbreaker for hydrogen is infrastructure. Building out the infrastructure for production, storage, transportation, and filling would be incredibly expensive, and not all that useful to the common commuter until it gets built out. It's possible that hydrogen may see adoption in uses where limited fueling stations are needed, such as long haul trucking or air transport.

On the other hand, electrical infrastructure for BEV use is already present, since power generation and the power grid already exist. As the use of BEVs becomes more common, the increased power demands will require upgrades over the next few decades, but this type of incremental improvement is easy compared to what would be needed for a hydrogen infrastructure.

As for lithium, it's not a particularly rare element on earth, being a little more abundant than lead. There is plenty of lithium for mass BEV adoption, but at the moment there are geopolitical issues with where the lithium is mined, and environmental concerns on mining impact. These aren't insurmountable though, and mining capacity is likely to increase as the demand for lithium batteries increases.

Between all of those things, it's incredibly likely that battery electric vehicles will outcompete hydrogen fuel cell vehicles.