Web3 has grown synonymous with blockchain. The things I really value in web3 are non-blockchain distributed systems. IPFS, Gun.js, heck, even BitTorrent could be considered web3. Most problems shouldn't be solved with blockchains. Crypto is what makes web3 artificially scarce.
Yes, but IMHO, IPFS without Filecoin doesn't really innovate in any meaningful way over previous CAS/DHT based distributed filesystems (Freenet, Tahoe-LAFS, etc). Filecoin lets IPFS claim that they have at least tried to solve the freeloader problem and incentivized people to actually store strangers' encrypted data long term.