No one wants to lose money simply because of database malfunctions. This is why database management is of great importance. Your website can collapse because of all sorts of reasons but not database related matters. There are also people who earn by managing databases remotely.
Generally, to get around the problem of website data migration, users usually have three ways at their disposal: Manual migration, Assisted migration, Automated migration.
However, no matter what you decide, the fear of data migration shouldn’t stop you from advancing your web project!