fenixfire : Q1
Company A: $Lithium Americas (LAC.US)$
Company B: $Solid Power (SLDP.US)$
Company C: $QuantumScape (QS.US)$
Q 2
Market Capitalization:
Company C > Company A > Company B
Q 3
This is can be seen as a parallel play to the EV industry's growth, as the lithium is a key element in battery production, and the battery is a critical component that can either support or limit the production rates of EVs.
As EV production ramps up, it should have a positive knock on  effect on all 3 companies.

fenixfire : 1. Company A: $PayPal (PYPL.US)$
Company B: $Fiserv (FI.US)$
Company C: $Fidelity National Information Services (FIS.US)$
2. Market Cap: B > A(within 10%) > C
3. Can explore the difference between the three, and based on their market cap, either consider their propensity for growth relative to each other or their relative dominance/perceived market confidence in each of the companies.

fenixfire : Company: Amazon

ROE: 11.07% (2021/FY)

Business model:
- Products: Online stores contributed to over 50% of Amazon revenues, followed by Physical Stores, Amazon AWS, Subscription Services, Third-party Seller Services, and Advertising revenues.
- Customers:  Tech savvy/equipped users
- Profitability: net profit margin > 6.6% (over the past 5 years)
- online shopping space is a expanding industry, with amazon still maintaining a good slice of the pie.

fenixfire : Growth company: Meta
Mature company : Apple