This is funny thing to say, considering that Blackrock literally own most of the assets in the world, bitcoin is only a tiny little thing for them 
But like always crypto news companies like to spin things, Tether had more profits but only from Bitcoin, and they started working bitcoin much earlier than blacrock did.
But let's get back on topic of USDS and Bitgo.
Investors always face a challenge in maintaining percentage-based profits as their capital increases. Billionaire Warren Buffett is famous for being able to do this, achieving around a 20% annual return for Berkshire Hathaway. BlackRock, the world's largest asset management company, also has to pay significant costs for employees, office space, partnerships..., and its net profit can be lower than Tether's.
This further confirms the attractiveness of crypto, and the evidence is that BlackRock is very actively supporting BTC through the BTC Spot ETF and BTC WhitePaper. This is also the motivation for us to have more stablecoin issuers in the market such as Paypal, Ripple and Bitgo. For me, new stablecoins will never be chosen for my portfolio. I will always choose the product of the giant that holds a 75% market share of stablecoins, which is USDT from Tether.