Why do we have Product and ProductSummary? And why the ProductSummary has more fields than Product itself?

gistfile1.rmd

# CrunchBase API v3 - Product list and detail

I'm consuming the CrunchBase API v3.
I'm a bit of puzzled with the API returning Products.

URL: `https://api.crunchbase.com/v/3/products`
IMHO should return list of Products, but instead it returns list of `ProuctSummary`.

So you are returning something called `ProductSummary` instead of just `Product`?

Example:
URL: `https://api.crunchbase.com/v/3/products/:permalink`
Permalink: `msn-tech-support-phone-number-1-844-449-0455`

Product's fields: `permalink`, `api_path`, `web_path`, `name`,
`lifecycle_stage`, `short_description`, `launched_on`,
`launched_on_trust_code`, `closed_on`, `closed_on_trust_code`,
`homepage_url`, `created_at`, `updated_at`

ProductSummary fields: "permalink", "api_path", "web_path", "name",
"short_description", "owner_permalink", "owner_api_path", "owner_web_path",
"owner_name", "profile_image_url", "homepage_url", "facebook_url",
"twitter_url", ", "created_at", "updated_at"

Why Product has less attributes than ProductSummary? And why is it that Product summary has different attributes than the ProductSummary?

Can you help me understand?