VARs means value-added resellers; SIs, system integrators; TRs, traditional resellers; CRs, cloud resellers; and Rs, retailers. The company table says CRs while the market table says CSPs for the same column of amounts. We use “Cloud resellers” consistently here; this source variation does not make those terms universal synonyms.
The source labels SME as USER>1000 and SMB as USER<1000. Exactly 1,000 is unassigned, and the rows combine sectors and company sizes. For your own analysis, agree complete, mutually exclusive definitions rather than treating these as universal segment rules. The source does not supply a market-data provenance or period; use the market amounts as teaching assumptions.
What does “market” include? In this guide, the market amount means the whole segment market, including our company’s sales. Do not add our sales again. If an estimate covers other suppliers only, first add our sales to obtain the whole market. Under that different assumption, the SME example would be $2,009,226 ÷ ($3,000,000 + $2,009,226) = 40.11%, instead of 66.97%. State which definition you are using before comparing the results.
Source: Evrim Ulaş Uysal, Channel Playbook: An Insider Guide to Channel Management (2017), original CFA teaching tables. The workbook contains the reconstruction notes and formulas.