Complex sentence: In financial capitalism, financial intermediaries become large concerns, ranging from banks to investment firms, such that deposit banks attract deposits and lend out money while investment banks obtain funds on the interbank market to relend for investment purposes.
Split into simpler sentences: In financial capitalism, financial intermediaries such as banks and investment firms', ranging from banks to investment firms become problems. Deposit banks attract deposits and lend out money while investment banks obtain funds on the interbank market to relend for investment purposes.