the.com/gold rush

means A sudden mass rush of people chasing a newly discovered source of wealth, usually a frantic scramble that enriches the suppliers more than the seekers.

from From the literal 19th-century gold rushes — California in 1848–49, later Australia, South Africa, the Klondike — when news of gold strikes sent thousands stampeding to the diggings. 'Rush' here keeps its old sense of a sudden violent crowding movement, the same word used for a rush of water or a crowd rushing a gate. The phrase stayed literal for decades before it broadened into metaphor, applied to any headlong stampede toward a hot new opportunity, from dot-com stocks to cryptocurrency.