That's a bummer! I always thought that Bitcoin mining was profitable using both ASIC and GPUs. Now that Ethereum is gone, no idea what coin will replace it's place and how soon.
What is scary is that there are people all over Reddit and Twitter asking the same questions. They over-invested on their rigs because they assumed that they would be making profits for years until their rigs are paid off to be faced with this reality.
We warned them for months about the upcoming merge. We told them how difficulty works, how supply is capped. However everyone was like "Oh, when ETH goes POS I will just mine ETC, profits almost the same".
When will some other coin replace Ethereum? We don't know. Maybe 6 months, maybe 1 year, maybe never. If you like mining you should just switch to an ASIC and mine BTC or LTC if you got a good price on power. GPU for the moment will be difficult.
for someone who cant mine anything anymore due to power cost, he probably wont be making profit either when mining BTC with an ASIC !...