No. The capital figure does not change who may accompany the principal investor. An eligible spouse and unmarried children under 21 may be included, with each person's own admissibility and documents assessed. What the lower figure changes is household finance: less capital committed may leave more reserve, but the money remains at risk.
Build the family budget around capital you can lose
Decide what the household would do if the investment returned nothing and the immigration case still needed funding for years. Keep living costs, schooling and any relocation out of the invested sum. Collect each family member's civil documents early, and ask counsel about a child approaching twenty-one, since age calculations depend on the individual record.
A pending petition gives no one permission to work or to enter the United States meanwhile. Separate the two things that depend on time here. One is the household's finances, which have to survive a wait of unknown length with the capital unavailable.
The other is each individual's own circumstances during that wait: a passport expiring, a course ending, a child approaching an age threshold, a business abroad needing decisions taken. Map both on a single calendar rather than treating the immigration case as the only clock running. Hypothetical example: an investor's household finds a spouse's professional registration abroad, a lease, and a child's final school year all falling within the same twelve months, which changes not whether they proceed but when the capital moves.
That is a scheduling conclusion rather than a legal one, and it is easier reached before subscription than after.