They want to dominate everything even if it doesn't make any sense for them. They'll find an angle like they did with King.
"We don't have movie studios but Sony, a japanese company, does. Let us compete"
It actually makes a lot of sense. They have tons of servers, making it easier/cheaper for them to run a streaming service. That said, there's a lot of problems, too. Here's my list, ordered roughly by how important I think they are.
1) Specific on-coming economic downturns in the computing market have made Microsoft temporarily cautious on expenditures, of which Netflix would be a massive one. At 146 billion dollars in market cap, Netflix is currently valued nearly at the same level as Sony and Nintendo combined.
2) A current, post-pandemic downturn in streaming of all kinds combined with long-term questions about how/if Netflix can maintain profitability in a competitive world.
3) Regulatory push-back on the heals of Disney/Fox, MS/Activision and Discovery/Warner. As a media company
and a streaming company, there's real desire to reign in consolidation in that space. The only way it could get worse would be for them to both own hospital systems too...
4) Internal forces within MS that are sick of plowing money into media services and want the company to focus on its One Big Thing(tm) which is Windows+Office.
5) Inability to agree on a price with Netflix management who, likely, want a bump in current market price while MS investors probably don't want to over-pay on last decade's big, hyped stock.
6) They could buy Paramount (Viacom, CBS, Paramount Pictures, etc) for 14.5 billion, Warner/Discovery (HBO Max) for 33.5 billion, one fourth the cost, and have similar market access or, for only 40 billion more, have Disney at 183 billion dollars and gain a huge trove of IP, the profit center cruise and parks divisions and the tv service, including ESPN. Comcast (Universal pictures, plus a huge ISP business in the US) is probably off the table due to regulatory concerns.
Long story short, Netflix is insanely over-valued right now, MS is in a cost saving mood and governments around the world would give a real stink-eye to any cloud consolidation at this point in time.