For such simple tasks like setting up a web server, Raspberry Pi has become a metaphor for any Linux capable embedded board with networking, a condition that can be satisfied by a huge number of boards, many of which easily available and often cheaper than the Raspberry Pi. A quick search at tme.eu for embedded boards in stock with Ethernet and at least 512 MB RAM returned 30 different products, starting from €35 in single quantity.

Ha this gave me a chuckle! The supply chain shortages go much further than just chips sadly :(