Team of Experts vs Individuals. Which is more in demand?

To build a quality product team takes a whole lot of time and startups are in constant battle to hire the top talents even after they have gotten some amount of funding from investors.

Are there limited talents or is building a product team just as hard? I would like to know your thoughts.

However, I believe companies who offer startups a team of experts to build their product have an edge.

This is because they get to be responsible for the logistics involved, and most likely have the systems and operations in place to bypass the hurdles faced in that category.

Ps - There are a few companies solving this problem like Grupa

Are you aware of other companies or startups doing this? I would like to know.