Why do some products not bundle trial days with their highest plan?

I sometimes fail to understand the pricing strategy of some new products in the market. They come with a free plan with limited/locked features along with a paid plan with no trial days.

Not talking about enterprise products here. Some products follow this even when they have nothing to lose by offering their highest plan free for a few days.

Is the customer expected to opt for a paid subscription without having a whole list of options to explore?

I understand it incurs costs and people need to have valid use cases first. But isn't it terrible for business?