The official page describes fee, vetting, gift, then an EB-1 or EB-2 petition and consular processing; it gives no timeline. The business can run as usual until the visa issues, since nothing is conferred before then, but the plan for its management after the move should exist before the gift.
Nothing changes until the visa, then everything does
A pending Gold Card case gives no status, so the owner continues to live in Pilot Butte, run the distributor and travel to the United States as a visitor. The length of the process depends on the vetting stage, on the immigrant petition's adjudication under EB-1 or EB-2, on visa availability for those categories for Canadian-born applicants, which the Visa Bulletin reports monthly and which has generally been current, and on consular appointment wait times. Once the immigrant visa issues and the family enters, residence begins immediately, and with it the obligation to live in the United States and file U.S.
taxes. The business therefore needs a management plan that survives his absence: a general manager, a corporate structure reviewed for the consequences of a U.S.-resident shareholder, and a decision about whether to sell. Those decisions belong before the gift, not after, and the official terms should be re-read on the day of each payment because the page states they may change.