A firm does not necessarily need to acquire every possible variation of its name.
However, strategically important domains may be worth securing defensively.
Depending on the brand, these could include:
Primary exact-match domain
Relevant .com and .vc versions
Common spelling variations
Full firm name
Abbreviated firm name
Domains previously used by the firm
Defensive domains can generally be redirected to the primary website.
The objective isn't to accumulate domains. It is to protect the reasonable paths people may use to find or communicate with the firm.